After one week into the game everyone is already wearing same backpack, which they will also keep wearing forever, and it's kinda weird. They are such a part of hearthling culture that one would rather walk around naked than put down their backpack. People drown but never let go of them. Even kings wear backpacks. It is truly a peculiar world.
But we could have different types of mobile storages to choose from:
bandolier
satchel
plank basket
hook belts
barrel bag
exploration rucksack
fruit basket
legionnaire marching pole
Each with their own usefulness:
bandolier: for carrying a large number of 1x1 things.
satchel: few things, but buff to agility
plank basket: vertical backpack for planks, boughs and long weapons.
hook belts: toolbelt for hanging a large number of small animals (squirrel, rabbits, ducks, hedgehogs)
barrel bag: for exclusively carrying a large amount of liquid without speed penalty.
exploration rucksack: large and heavy backpack for long treks underground or in the wilderness.
fruit basket: backpack that lets us carry very large amounts of fruits and berries, although exclusively so (similar to how buckets work with seeds).
legionnaire marching pole: smaller backpack that can be quickly dropped with preassigned contents to provide no-backpack speed bonuses during combat.
Let me repeat though: characters that don't wear backpacks should receive some benefits.
Pics in no particular order: