CompressedItems

This mod allows you to compress 9 of any item in your crafting table into a compressed item. This way, you can hold up to 576 items with one stack! Compressed fuels can be used as fuels and burn 9 times longer

You can configure which items can be compressed to your liking (all, stones, foods, storage blocks, dyes, fuels, miscellaneous). Since version 1.1, every item with the 'can_be_compressed' tag can be compressed (as the name implies). If you wish to make only certain items compressable, add them to the 'can_be_compressed' tag.

To craft a compressed item, ensure the item's tooltip says it can be compressed, then put 9 of the same item in a 3x3 formation in your crafting table, and you will get the compressed item as a result.

You can put the compressed item in a crafting table to get your items back.