diff --git a/assets/common/items/debug/admin_black_hole.ron b/assets/common/items/debug/admin_black_hole.ron
index 8cc8cd3f12..c565e9aa5b 100644
--- a/assets/common/items/debug/admin_black_hole.ron
+++ b/assets/common/items/debug/admin_black_hole.ron
@@ -9,5 +9,5 @@ ItemDef(
     ),
     quality: Debug,
     tags: [],
-    slots: 900,
+    slots: 1,
 )
diff --git a/client/src/lib.rs b/client/src/lib.rs
index 23ad15aa00..fb72e1efc3 100644
--- a/client/src/lib.rs
+++ b/client/src/lib.rs
@@ -1119,6 +1119,13 @@ impl Client {
 
     pub fn swap_slots(&mut self, a: Slot, b: Slot) {
         match (a, b) {
+            (Slot::Overflow(o), Slot::Inventory(inv))
+            | (Slot::Inventory(inv), Slot::Overflow(o)) => {
+                self.send_msg(ClientGeneral::ControlEvent(ControlEvent::InventoryEvent(
+                    InventoryEvent::OverflowMove(o, inv),
+                )));
+            },
+            (Slot::Overflow(_), _) | (_, Slot::Overflow(_)) => {},
             (Slot::Equip(equip), slot) | (slot, Slot::Equip(equip)) => self.control_action(
                 ControlAction::InventoryAction(InventoryAction::Swap(equip, slot)),
             ),
@@ -1138,6 +1145,9 @@ impl Client {
             Slot::Inventory(inv) => self.send_msg(ClientGeneral::ControlEvent(
                 ControlEvent::InventoryEvent(InventoryEvent::Drop(inv)),
             )),
+            Slot::Overflow(o) => self.send_msg(ClientGeneral::ControlEvent(
+                ControlEvent::InventoryEvent(InventoryEvent::OverflowDrop(o)),
+            )),
         }
     }
 
@@ -1173,6 +1183,7 @@ impl Client {
                     InventoryEvent::SplitSwap(inv1, inv2),
                 )))
             },
+            (Slot::Overflow(_), _) | (_, Slot::Overflow(_)) => {},
         }
     }
 
@@ -1184,6 +1195,9 @@ impl Client {
             Slot::Inventory(inv) => self.send_msg(ClientGeneral::ControlEvent(
                 ControlEvent::InventoryEvent(InventoryEvent::SplitDrop(inv)),
             )),
+            Slot::Overflow(o) => self.send_msg(ClientGeneral::ControlEvent(
+                ControlEvent::InventoryEvent(InventoryEvent::OverflowSplitDrop(o)),
+            )),
         }
     }
 
@@ -1393,6 +1407,7 @@ impl Client {
                 if let Some(item) = match item {
                     Slot::Equip(equip_slot) => inv.equipped(equip_slot),
                     Slot::Inventory(invslot) => inv.get(invslot),
+                    Slot::Overflow(_) => None,
                 } {
                     item.has_durability()
                 } else {
diff --git a/common/src/comp/controller.rs b/common/src/comp/controller.rs
index 285ca705e1..6122d3d05d 100644
--- a/common/src/comp/controller.rs
+++ b/common/src/comp/controller.rs
@@ -31,6 +31,9 @@ pub enum InventoryEvent {
         craft_event: CraftEvent,
         craft_sprite: Option<VolumePos>,
     },
+    OverflowMove(usize, InvSlotId),
+    OverflowDrop(usize),
+    OverflowSplitDrop(usize),
 }
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
@@ -86,6 +89,11 @@ impl From<InventoryEvent> for InventoryManip {
                 craft_event,
                 craft_sprite,
             },
+            InventoryEvent::OverflowMove(o, inv) => {
+                Self::Swap(Slot::Overflow(o), Slot::Inventory(inv))
+            },
+            InventoryEvent::OverflowDrop(o) => Self::Drop(Slot::Overflow(o)),
+            InventoryEvent::OverflowSplitDrop(o) => Self::SplitDrop(Slot::Overflow(o)),
         }
     }
 }
diff --git a/common/src/comp/inventory/mod.rs b/common/src/comp/inventory/mod.rs
index 3ede192829..5fe9484834 100644
--- a/common/src/comp/inventory/mod.rs
+++ b/common/src/comp/inventory/mod.rs
@@ -524,11 +524,38 @@ impl Inventory {
         *self.slot_mut(b).unwrap() = slot_a;
     }
 
+    /// Moves an item from an overflow slot to an inventory slot
+    pub fn move_overflow_item(&mut self, overflow: usize, inv_slot: InvSlotId) {
+        match self.slot(inv_slot) {
+            Some(Some(_)) => {
+                warn!("Attempted to move from overflow slot to a filled inventory slot");
+                return;
+            },
+            None => {
+                warn!("Attempted to move from overflow slot to a non-existent inventory slot");
+                return;
+            },
+            Some(None) => {},
+        };
+
+        let item = self.overflow_items.remove(overflow);
+        *self.slot_mut(inv_slot).unwrap() = Some(item);
+    }
+
     /// Remove an item from the slot
     pub fn remove(&mut self, inv_slot_id: InvSlotId) -> Option<Item> {
         self.slot_mut(inv_slot_id).and_then(|item| item.take())
     }
 
+    /// Remove an item from an overflow slot
+    pub fn overflow_remove(&mut self, overflow_slot: usize) -> Option<Item> {
+        if overflow_slot < self.overflow_items.len() {
+            Some(self.overflow_items.remove(overflow_slot))
+        } else {
+            None
+        }
+    }
+
     /// Remove just one item from the slot
     pub fn take(
         &mut self,
@@ -579,6 +606,34 @@ impl Inventory {
         }
     }
 
+    /// Takes half of the items from an overflow slot
+    pub fn overflow_take_half(
+        &mut self,
+        overflow_slot: usize,
+        ability_map: &AbilityMap,
+        msm: &MaterialStatManifest,
+    ) -> Option<Item> {
+        if let Some(item) = self.overflow_items.get_mut(overflow_slot) {
+            if item.is_stackable() && item.amount() > 1 {
+                let mut return_item = item.duplicate(ability_map, msm);
+                let returning_amount = item.amount() / 2;
+                item.decrease_amount(returning_amount).ok()?;
+                return_item.set_amount(returning_amount).expect(
+                    "return_item.amount() = item.amount() / 2 < item.amount() (since \
+                     item.amount() ≥ 1) ≤ item.max_amount() = return_item.max_amount(), since \
+                     return_item is a duplicate of item",
+                );
+                Some(return_item)
+            } else if overflow_slot < self.overflow_items.len() {
+                Some(self.overflow_items.remove(overflow_slot))
+            } else {
+                None
+            }
+        } else {
+            None
+        }
+    }
+
     /// Takes all items from the inventory
     pub fn drain(&mut self) -> impl Iterator<Item = Item> + '_ {
         self.slots_mut()
@@ -781,6 +836,15 @@ impl Inventory {
                 self.loadout.swap_slots(slot_a, slot_b, time);
                 Vec::new()
             },
+            (Slot::Overflow(overflow_slot), Slot::Inventory(inv_slot))
+            | (Slot::Inventory(inv_slot), Slot::Overflow(overflow_slot)) => {
+                self.move_overflow_item(overflow_slot, inv_slot);
+                Vec::new()
+            },
+            // Items from overflow slots cannot be equipped until moved into a real inventory slot
+            (Slot::Overflow(_), Slot::Equip(_)) | (Slot::Equip(_), Slot::Overflow(_)) => Vec::new(),
+            // Items cannot be moved between overflow slots
+            (Slot::Overflow(_), Slot::Overflow(_)) => Vec::new(),
         }
     }
 
@@ -976,6 +1040,8 @@ impl Inventory {
                 self.loadout
                     .repair_item_at_slot(equip_slot, ability_map, msm);
             },
+            // Items in overflow slots cannot be repaired until they are moved to a real slot
+            Slot::Overflow(_) => {},
         }
     }
 
diff --git a/common/src/comp/inventory/slot.rs b/common/src/comp/inventory/slot.rs
index 37ca0c981d..1fe38fd41b 100644
--- a/common/src/comp/inventory/slot.rs
+++ b/common/src/comp/inventory/slot.rs
@@ -15,6 +15,7 @@ pub enum SlotError {
 pub enum Slot {
     Inventory(InvSlotId),
     Equip(EquipSlot),
+    Overflow(usize),
 }
 
 #[derive(Clone, Copy, Debug, Hash, PartialEq, Eq, Serialize, Deserialize)]
@@ -111,6 +112,7 @@ impl Slot {
         match (self, item_kind) {
             (Self::Inventory(_), _) => true,
             (Self::Equip(slot), item_kind) => slot.can_hold(item_kind),
+            (Self::Overflow(_), _) => true,
         }
     }
 }
diff --git a/common/src/recipe.rs b/common/src/recipe.rs
index ca500c68a4..c6ecdbb5d0 100644
--- a/common/src/recipe.rs
+++ b/common/src/recipe.rs
@@ -1030,6 +1030,8 @@ impl RepairRecipeBook {
         if let Some(item) = match item {
             Slot::Equip(slot) => inv.equipped(slot),
             Slot::Inventory(slot) => inv.get(slot),
+            // Items in overflow slots cannot be repaired until item is moved to a real slot
+            Slot::Overflow(_) => None,
         } {
             if let Some(repair_recipe) = self.repair_recipe(item) {
                 repair_recipe
diff --git a/common/src/states/utils.rs b/common/src/states/utils.rs
index 67958d22b4..038fb49a68 100644
--- a/common/src/states/utils.rs
+++ b/common/src/states/utils.rs
@@ -1141,6 +1141,9 @@ pub fn handle_manipulate_loadout(
             let inv_manip = InventoryManip::Use(slot);
             output_events.emit_server(ServerEvent::InventoryManip(data.entity, inv_manip));
         },
+        InventoryAction::Use(Slot::Overflow(_)) => {
+            // Items in overflow slots cannot be used until moved to a real slot
+        },
         InventoryAction::ToggleSpriteLight(pos, enable) => {
             if matches!(pos.kind, Volume::Terrain) {
                 let sprite_interact = sprite_interact::SpriteInteractKind::ToggleLight(enable);
diff --git a/server/src/events/inventory_manip.rs b/server/src/events/inventory_manip.rs
index 74c9e92ecc..152a28107b 100644
--- a/server/src/events/inventory_manip.rs
+++ b/server/src/events/inventory_manip.rs
@@ -559,6 +559,8 @@ pub fn handle_inventory(server: &mut Server, entity: EcsEntity, manip: comp::Inv
                     }
                     Some(InventoryUpdateEvent::Used)
                 },
+                // Items in overflow slots cannot be used
+                Slot::Overflow(_) => None,
             };
 
             drop(inventories);
@@ -663,6 +665,7 @@ pub fn handle_inventory(server: &mut Server, entity: EcsEntity, manip: comp::Inv
             let item = match slot {
                 Slot::Inventory(slot) => inventory.take_half(slot, &ability_map, &msm),
                 Slot::Equip(_) => None,
+                Slot::Overflow(_) => None,
             };
 
             if let Some(item) = item {
@@ -686,6 +689,7 @@ pub fn handle_inventory(server: &mut Server, entity: EcsEntity, manip: comp::Inv
             let item = match slot {
                 Slot::Inventory(slot) => inventory.remove(slot),
                 Slot::Equip(slot) => inventory.replace_loadout_item(slot, None, time),
+                Slot::Overflow(slot) => inventory.overflow_remove(slot),
             };
 
             // FIXME: We should really require the drop and write to be atomic!
@@ -717,6 +721,7 @@ pub fn handle_inventory(server: &mut Server, entity: EcsEntity, manip: comp::Inv
             let item = match slot {
                 Slot::Inventory(slot) => inventory.take_half(slot, ability_map, &msm),
                 Slot::Equip(_) => None,
+                Slot::Overflow(o) => inventory.overflow_take_half(o, ability_map, &msm),
             };
 
             // FIXME: We should really require the drop and write to be atomic!
diff --git a/voxygen/src/hud/crafting.rs b/voxygen/src/hud/crafting.rs
index af7439ba8b..6f81791c84 100644
--- a/voxygen/src/hud/crafting.rs
+++ b/voxygen/src/hud/crafting.rs
@@ -1576,6 +1576,7 @@ impl<'a> Widget for Crafting<'a> {
                                 modifier: craft_slot_2.and_then(|slot| match slot {
                                     Slot::Inventory(slot) => Some(slot),
                                     Slot::Equip(_) => None,
+                                    Slot::Overflow(_) => None,
                                 }),
                             });
                         }
@@ -1736,6 +1737,7 @@ impl<'a> Widget for Crafting<'a> {
                         .and_then(|slot| match slot {
                             Slot::Inventory(slot) => self.inventory.get(slot),
                             Slot::Equip(_) => None,
+                            Slot::Overflow(_) => None,
                         })
                         .and_then(|item| item.item_definition_id().itemdef_id().map(String::from))
                     {
@@ -1746,6 +1748,7 @@ impl<'a> Widget for Crafting<'a> {
                                 .and_then(|slot| match slot {
                                     Slot::Inventory(slot) => self.inventory.get(slot),
                                     Slot::Equip(_) => None,
+                                    Slot::Overflow(_) => None,
                                 })
                                 .and_then(|item| {
                                     item.item_definition_id().itemdef_id().map(String::from)
@@ -1769,6 +1772,7 @@ impl<'a> Widget for Crafting<'a> {
                     if let Some(item) = match craft_slot_1 {
                         Some(Slot::Inventory(slot)) => self.inventory.get(slot),
                         Some(Slot::Equip(slot)) => self.inventory.equipped(slot),
+                        Some(Slot::Overflow(_)) => None,
                         None => None,
                     } {
                         if let Some(recipe) = self.client.repair_recipe_book().repair_recipe(item) {
diff --git a/voxygen/src/hud/slots.rs b/voxygen/src/hud/slots.rs
index 3174d845b7..91527cd6fb 100644
--- a/voxygen/src/hud/slots.rs
+++ b/voxygen/src/hud/slots.rs
@@ -286,6 +286,7 @@ impl CraftSlot {
         match self.slot {
             Some(Slot::Inventory(slot)) => inv.get(slot),
             Some(Slot::Equip(slot)) => inv.equipped(slot),
+            Some(Slot::Overflow(_)) => None,
             None => None,
         }
     }
diff --git a/voxygen/src/session/mod.rs b/voxygen/src/session/mod.rs
index 12213465cd..cfb577db6c 100644
--- a/voxygen/src/session/mod.rs
+++ b/voxygen/src/session/mod.rs
@@ -1753,6 +1753,7 @@ impl PlayState for SessionState {
                                             move_allowed = false;
                                         }
                                     },
+                                    Slot::Overflow(_) => {},
                                 }
                             };
                         }
@@ -2021,6 +2022,7 @@ impl PlayState for SessionState {
                                     let item = match item {
                                         Slot::Equip(slot) => inventory.equipped(slot),
                                         Slot::Inventory(slot) => inventory.get(slot),
+                                        Slot::Overflow(_) => None,
                                     }?;
                                     let repair_recipe =
                                         client.repair_recipe_book().repair_recipe(item)?;