UsEful Backpacks Mod will add 3 new backpacks small for light campaigns, medium and large for long trips. In them you can store objects, blocks and other resources, it is convenient to explore the mines with a backpack, roam the jungle and go long distances from the house for resource production, having a backpack there is no need to constantly return to the house to leave the found resources in chests.
How to install uceful backpacks
Install Minecraft Forge
Download useful backpacks
For 1.16.5