The mod adds crates, bags and baskets for convenient sorting and compact storage of items.
• Most items can be packed: 9 identical items in the workbench are converted into 1 crate (or bag or basket depending on the item).
• Containers can be:
– stored in the inventory as regular items (Crades, bags, baskets stack up to 64);
– placed like decorative blocks.
– at any time the crate can be turned back into items.
Example:
• 9 blocks of earth → 1 box of earth. When you unpack a box of earth, you get 9 blocks of earth back.
• This allows you to store 576 blocks of earth in one slot.
This addon is port of Java Mod - https://github.com/SaltSouls/Packed-Up

