scarlet hawk
Basically add a variant of Barrels (suggestion of recipe on the image) that would act like a poor's man version of Shulker Boxes.
Also, allow them to be equippable and acessible on the back using Trinkets, working similarly to Bauble Shulker Boxes. https://legacy.curseforge.com/minecraft/mc-mods/bauble-shulker-boxes
amber acorn
Could give it a durability to balance it
scarlet hawk
to vanilla barrels?
amber acorn
No, the portable ones that you're proposing
They could be placable a certain amount of times depending on the material used to reinforce them
scarlet hawk
maybe