✦ 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

• 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 ✦

Each tier requires the previous backpack as an ingredient — creating a natural progression chain!

• Leather Backpack — 27 Slots · 1 Upgrade Slot · Leather + String + Chest
• Copper Backpack — 45 Slots · 2 Upgrade Slots · Copper Ingots + Leather Backpack
• ⚪ Iron Backpack — 54 Slots · 3 Upgrade Slots · Iron Ingots + Copper Backpack
• Gold Backpack — 81 Slots · 4 Upgrade Slots · Gold Ingots + Iron Backpack
• Diamond Backpack — 108 Slots · 5 Upgrade Slots · Diamonds + Gold Backpack
• Netherite Backpack — 120 Slots · 6 Upgrade Slots · Smithing Table + Netherite Ingot

✦ Upgrades ✦

Upgrades are placed into the backpack's upgrade slots to grant powerful abilities:

️ Utility Upgrades

• 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

• 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

• 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 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.

✦ Backpack Recipes ✦

Leather Backpack
Slots: 27 · Upgrade Slots: 1
The starting tier backpack. Requires basic materials to craft.

Copper Backpack
Slots: 45 · Upgrade Slots: 2
An upgrade from leather — requires copper ingots and a Leather Backpack.

⚪ Iron Backpack
Slots: 54 · Upgrade Slots: 3
Solid mid-tier storage. Requires iron ingots and a Copper Backpack.

Gold Backpack
Slots: 81 · Upgrade Slots: 4
High-capacity storage with plenty of room for upgrades.

Diamond Backpack
Slots: 108 · Upgrade Slots: 5
Premium-tier storage. Only one step away from the ultimate backpack.

Netherite Backpack
Slots: 120 · Upgrade Slots: 6
The ultimate backpack. Crafted at a Smithing Table using the Netherite Upgrade template.


✦ Upgrade Recipes ✦

️ Upgrade Base
The fundamental component for crafting most upgrades.

Crafting Station
Adds a portable crafting table to your backpack.

Pickup Upgrade
Auto-collects picked-up items into the backpack.

Magnet Upgrade
Pulls nearby items directly into your backpack. Requires the Pickup Upgrade.

Feeding Upgrade
Auto-feeds the player using food stored in the backpack.

Refill Upgrade
Auto-refills hotbar items from the backpack as they deplete.

Compacting Upgrade
Auto-compresses items into their block forms.

⚔️ Tool Swapper
Auto-swaps to the best tool for the block you are mining.

Anvil Upgrade
Adds a portable anvil to your backpack.

Jukebox Upgrade
Play music discs directly from your backpack's GUI.

️ Smithing Upgrade
A portable Smithing Table for your backpack.

Smelting Upgrade
Smelts items automatically while you travel.

Blasting Upgrade
High-speed smelting for ores and materials.

Smoker Upgrade
Rapidly cooks food items while you're on the move.

Copper Stack Upgrade
Increases max stack size in the backpack to 96.

⚪ Iron Stack Upgrade
Increases max stack size in the backpack to 128.

Gold Stack Upgrade
Increases max stack size in the backpack to 256.

Diamond Stack Upgrade
Increases max stack size in the backpack to 512.

Netherite Stack Upgrade
Increases max stack size in the backpack to 1024.