Ender Pocket

Use it to upgrade backpacks or drawers. You don't need templates for this.

Backpacks increase 9 slots per upgrade, and can have at most 72 slot.

Drawer capacity increases by 64 stacks (4096 items) per upgrade, can can have at most 512 stacks (32768 items).

Storage Bag capacity increases by 64 items per upgrade, can can have at most 256 items.