✦ What is Probably Backpacks? ✦
Probably Backpacks adds a complete tiered backpack system to your Minecraft server. Players craft backpacks from Leather all the way up to Netherite — each tier offering more storage and more upgrade slots.
Backpacks are equipped in the CuriosPaper Back slot and are visible on the player's back as a 3D model! This plugin is a CuriosPaper addon, hooking into the accessory system to provide a seamless experience with custom textures, real-time dyeing, and a powerful upgrade system.
[!IMPORTANT]
This plugin requires CuriosPaper to function!
✦ Features ✦
🎒 Core Backpack System
|
Feature |
Description |
| 🎒 |
6 Backpack Tiers |
Leather → Copper → Iron → Gold → Diamond → Netherite |
| 📦 |
27 to 120 Slots |
Scale from a small pouch to a massive storage vault |
| ⬆️ |
19+ Upgrades |
Crafting, Magnet, Cooking, Anvil, Jukebox, Tool Swapper & more |
| 🎨 |
Real-time Dyeing |
Over 16 colors with live 3D model updates |
| 🧟 |
Mob Drops |
Mobs can spawn wearing backpacks — loot them for extra storage |
| 👀 |
3D Models |
Visible on the player's back with auto-hide when looking down |
| 🔑 |
Hotkey Support |
Open your backpack with a double-sneak combo — no commands needed |
| 🗄️ |
Massive Stacks |
Stack items up to 1024 with Netherite Stack Upgrades |
✦ Backpack Tiers ✦
| Tier |
Slots |
Upgrade Slots |
Key Material |
| 🟤 Leather Backpack |
27 |
1 |
Leather + String + Chest |
| 🟠 Copper Backpack |
45 |
2 |
Copper Ingots + Leather Backpack |
| ⚪ Iron Backpack |
54 |
3 |
Iron Ingots + Copper Backpack |
| 🟡 Gold Backpack |
81 |
4 |
Gold Ingots + Iron Backpack |
| 🔵 Diamond Backpack |
108 |
5 |
Diamonds + Gold Backpack |
| 🟣 Netherite Backpack |
120 |
6 |
Smithing Table + Netherite Ingot |
Each tier requires the previous backpack as an ingredient — creating a natural progression chain!
✦ Upgrades ✦
Upgrades are placed into the backpack's upgrade slots to grant powerful abilities:
🛠️ Utility Upgrades
| Upgrade |
Effect |
| 🔧 Crafting Station |
Open a portable crafting table from within your backpack |
| 🔨 Anvil Upgrade |
Portable anvil for repairing items on the go |
| 🎵 Jukebox Upgrade |
Play music discs directly from your backpack |
| 🛠️ Smithing Upgrade |
Portable smithing table for gear progression |
| ⚔️ Tool Swapper |
Automatically swaps to the best tool for the block you're mining |
🧺 Automation Upgrades
| Upgrade |
Effect |
| 📥 Pickup Upgrade |
Automatically collect picked-up items into your backpack |
| 🧲 Magnet Upgrade |
Pull nearby items directly into your backpack |
| 🍖 Feeding Upgrade |
Auto-feed the player using food stored in the backpack |
| 🔄 Refill Upgrade |
Auto-refill hotbar items from the backpack as they are used |
| 📦 Compacting Upgrade |
Automatically compress items into blocks (e.g. Iron Ingots → Iron Block) |
🍳 Cooking Upgrades
| Upgrade |
Effect |
| 🔥 Smelting Upgrade |
Portable furnace that smelts items while you walk |
| 💨 Blasting Upgrade |
High-speed smelting for ores |
| 🍖 Smoker Upgrade |
Rapid cooking for food items |
🗄️ Storage Upgrades
| Upgrade |
Effect |
| 🛠️ Upgrade Base |
The fundamental component used to craft all other upgrades |
| 🟠 Copper Stack |
Increases max stack size of items in the backpack to 96 |
| ⚪ Iron Stack |
Increases max stack size of items in the backpack to 128 |
| 🟡 Gold Stack |
Increases max stack size of items in the backpack to 256 |
| 🔵 Diamond Stack |
Increases max stack size of items in the backpack to 512 |
| 🟣 Netherite Stack |
Increases max stack size of items in the backpack to 1024 |
✦ Dyeing & Mobs ✦
🎨 Dyeing System
Express yourself with over 16 unique colors! Leather backpacks can be dyed directly within the backpack inventory.
- Simple Dyeing: No complex GUIs! Simply drop any Minecraft dye onto the dye button in the backpack interface.
- Remove Color: Use a Water Bucket on the dye button to clear the color.
- Live Updates: The 3D model on your back updates instantly when you change the color.
🧟 Mob Drops
Backpacks aren't just for players anymore! Zombies and Skeletons have a small chance to spawn wearing a backpack.
- Visual Models: You can see exactly which tier of backpack a mob is wearing.
- Lootable: Defeat the mob for a chance to collect their backpack!
- Configurable: Adjust spawn rates and which tiers mobs can carry in the
config.yml.
✦ Recipes ✦
🎒 Backpack Recipes (click to expand)
 |
🟤 Leather Backpack
Slots: 27 · Upgrade Slots: 1
The starting tier backpack. Requires basic materials to craft.
|
|
|
| String |
Leather |
String |
| String |
Chest |
String |
| Leather |
Leather |
Leather |
|
🟠 Copper Backpack
Slots: 45 · Upgrade Slots: 2
An upgrade from leather — requires copper ingots and a Leather Backpack.
|
|
|
| Copper Ingot |
Copper Ingot |
Copper Ingot |
| Copper Ingot |
🟤 Leather Backpack |
Copper Ingot |
| Copper Ingot |
Copper Ingot |
Copper Ingot |
|
 |
 |
⚪ Iron Backpack
Slots: 54 · Upgrade Slots: 3
Solid mid-tier storage. Requires iron ingots and a Copper Backpack.
|
|
|
| Iron Ingot |
Iron Ingot |
Iron Ingot |
| Iron Ingot |
🟠 Copper Backpack |
Iron Ingot |
| Iron Ingot |
Iron Ingot |
Iron Ingot |
|
🟡 Gold Backpack
Slots: 81 · Upgrade Slots: 4
High-capacity storage with plenty of room for upgrades.
|
|
|
| Gold Ingot |
Gold Ingot |
Gold Ingot |
| Gold Ingot |
⚪ Iron Backpack |
Gold Ingot |
| Gold Ingot |
Gold Ingot |
Gold Ingot |
|
 |
 |
🔵 Diamond Backpack
Slots: 108 · Upgrade Slots: 5
Premium-tier storage. Only one step away from the ultimate backpack.
|
|
|
| Diamond |
Diamond |
Diamond |
| Diamond |
🟡 Gold Backpack |
Diamond |
| Diamond |
Diamond |
Diamond |
|
🟣 Netherite Backpack
Slots: 120 · Upgrade Slots: 6
The ultimate backpack. Crafted at a Smithing Table using the Netherite Upgrade template.
| Component |
Item |
| Template |
Netherite Upgrade Smithing Template |
| Base |
🔵 Diamond Backpack |
| Addition |
Netherite Ingot |
|
 |
⬆️ Upgrade Recipes (click to expand)
 |
🛠️ Upgrade Base
The fundamental component for crafting most upgrades.
|
|
|
| String |
Iron Ingot |
String |
| Iron Ingot |
Leather |
Iron Ingot |
| String |
Iron Ingot |
String |
|
🔧 Crafting Station
Adds a portable crafting table to your backpack.
|
|
|
| Oak Planks |
Crafting Table |
Oak Planks |
| Oak Planks |
🛠️ Upgrade Base |
Oak Planks |
| Oak Planks |
Crafting Table |
Oak Planks |
|
 |
 |
📥 Pickup Upgrade
Auto-collects picked-up items into the backpack.
|
|
|
|
Piston |
|
| String |
🛠️ Upgrade Base |
String |
| Redstone |
Redstone |
Redstone |
|
🧲 Magnet Upgrade
Pulls nearby items directly into your backpack. Requires the Pickup Upgrade.
|
|
|
| Ender Pearl |
Iron Ingot |
Ender Pearl |
| Iron Ingot |
📥 Pickup Upgrade |
Iron Ingot |
| Redstone |
Diamond |
Lapis Lazuli |
|
 |
 |
🍖 Feeding Upgrade
Auto-feeds the player using food stored in the backpack.
|
|
|
|
Golden Carrot |
|
| Golden Apple |
🛠️ Upgrade Base |
Glistering Melon Slice |
|
Ender Pearl |
|
|
🔄 Refill Upgrade
Auto-refills hotbar items from the backpack as they deplete.
|
|
|
|
Ender Pearl |
|
| Iron Ingot |
🛠️ Upgrade Base |
Iron Ingot |
| Redstone |
Chest |
Redstone |
|
 |
 |
📦 Compacting Upgrade
Auto-compresses items into their block forms.
|
|
|
| Iron Ingot |
Piston |
Iron Ingot |
| Piston |
🛠️ Upgrade Base |
Piston |
| Redstone |
Piston |
Redstone |
|
⚔️ Tool Swapper
Auto-swaps to the best tool for the block you are mining.
|
|
|
| Redstone |
Wood Sword |
Redstone |
| Wood Pick |
🛠️ Upgrade Base |
Wood Axe |
| Iron Ingot |
Wood Shovel |
Iron Ingot |
|
 |
 |
🔨 Anvil Upgrade
Adds a portable anvil to your backpack.
|
|
|
| Anvil |
Diamond |
Anvil |
| Iron Ingot |
🛠️ Upgrade Base |
Iron Ingot |
|
Chest |
|
|
🎵 Jukebox Upgrade
Play music discs directly from your backpack's GUI.
|
|
|
|
Jukebox |
|
| Iron Ingot |
🛠️ Upgrade Base |
Iron Ingot |
|
Redstone |
|
|
 |
 |
🛠️ Smithing Upgrade
A portable Smithing Table for your backpack.
|
|
|
|
Smithing Table |
|
| Iron Ingot |
🛠️ Upgrade Base |
Iron Ingot |
|
Chest |
|
|
🔥 Smelting Upgrade
Smelts items automatically while you travel.
|
|
|
| Redstone |
Iron Ingot |
Redstone |
| Iron Ingot |
🛠️ Upgrade Base |
Iron Ingot |
| Redstone |
Furnace |
Redstone |
|
 |
 |
💨 Blasting Upgrade
High-speed smelting for ores and materials.
|
|
|
| Redstone |
Iron Ingot |
Redstone |
| Iron Ingot |
🛠️ Upgrade Base |
Iron Ingot |
| Redstone |
Blast Furnace |
Redstone |
|
🍖 Smoker Upgrade
Rapidly cooks food items while you're on the move.
|
|
|
| Redstone |
Iron Ingot |
Redstone |
| Iron Ingot |
🛠️ Upgrade Base |
Iron Ingot |
| Redstone |
Smoker |
Redstone |
|
 |
 |
🟠 Copper Stack Upgrade
Increases max stack size in the backpack to 96.
|
|
|
| Copper Block |
Copper Block |
Copper Block |
| Copper Block |
🛠️ Upgrade Base |
Copper Block |
| Copper Block |
Copper Block |
Copper Block |
|
⚪ Iron Stack Upgrade
Increases max stack size in the backpack to 128.
|
|
|
| Iron Block |
Iron Block |
Iron Block |
| Iron Block |
🟠 Copper Stack Upgrade |
Iron Block |
| Iron Block |
Iron Block |
Iron Block |
|
 |
 |
🟡 Gold Stack Upgrade
Increases max stack size in the backpack to 256.
|
|
|
| Gold Block |
Gold Block |
Gold Block |
| Gold Block |
⚪ Iron Stack Upgrade |
Gold Block |
| Gold Block |
Gold Block |
Gold Block |
|
🔵 Diamond Stack Upgrade
Increases max stack size in the backpack to 512.
|
|
|
| Diamond Block |
Diamond Block |
Diamond Block |
| Diamond Block |
🟡 Gold Stack Upgrade |
Diamond Block |
| Diamond Block |
Diamond Block |
Diamond Block |
|
 |
 |
🟣 Netherite Stack Upgrade
Increases max stack size in the backpack to 1024.
|
|
|
| Netherite Block |
Netherite Block |
Netherite Block |
| Netherite Block |
🔵 Diamond Stack Upgrade |
Netherite Block |
| Netherite Block |
Netherite Block |
Netherite Block |
|
✦ Stats & Support ✦
✦ Quick Start ✦
- Download CuriosPaper.jar and ProbablyBackpacks.jar
- Drop both into your server's
plugins/ folder
- Restart the server
- Craft a Leather Backpack and equip it in the CuriosPaper Back slot
- Use the Double-Sneak hotkey — you're all set!
