This mod adds 5 items.

• A small backpack, that has 9 slots.
• A medium backpack, that has 18 slots.
• A large backpack, that has 27 slots.
• A ender backpack, a backpack that lets you access your ender chest from anywhere!
• A global backpack, a universal inventory that is only connected with anyone that has this item!

It also adds an enchantment!

• Capacity, an enchantment that increases your backpack's storage by 9 additional slots per level! (Note: Can be applied on medium and large backpack only).

Also, Regular backpacks are dyeable like bundles!

1.3 and above

• Backpacks are like bundles. You can use the item form of a backpack to input item into it like a bundle. Backpacks only allows inserting item.
• Backpacks. backpacks. You can right click a backpack in a inventory to open it.
• Placeable backpacks.

Note: This below requires you have the Trinkets (Polymer Port) mod!

• You can put backpacks on a trinkets back slot. To open the backpack do /open.
• You also place it! Just shift right click on the ground with an empty hand.

• /backpacks:

  • /backpack backup Makes a backup.
  • /backpacks list: Lists created backpack instances.
  • /backpacks open <UUID>: Specify an UUID to open a backpack instance.

• /backpacks open config :

  • /backpacks open config reset: Resets the backpack's config.
  • /backpacks open config reload: Saves the backpack's config.
  • /backpacks open config save: Reloads the backpack's config.

• /open :

  • Allows to open a backpack when it is equipped on the trinkets back slot.

• back_positions: Adjusts the backpack’s position on the player’s back.
• back_yaw: Controls horizontal rotation (left/right) of the backpack.
• back_pitch_when_sneaking: Alters the tilt angle of the backpack when the player is sneaking.

• display_back: <default: true> Determines whether or not the backpack should be displayed on the back when equipped.
• breaks_with_flow <default: true> Determines whether or not the backpack should break when water flows to it.

• types_of_backpacks : Add or remove an entry to remove or create a backpack.

Write /polymer generate command. Resource pack will be located in your server folder as polymer-resourcepack.zip or you can enable auto-host in polymer's config.