As far as I and the wiki knows, there is no use for the belt inventory slot but to fill it with a completely useless belt.
Sure some decoration on your character is fine, but I would like to see this slot become useful, or the belt to become useful.
My suggestion is to be able for you to add an attachment to the belt.
A list of suggestions to attach to the belt:
- A seedbag
- A merchants pocket ( 1 extra hor. row ) ( costs hardened leather and silk to make it not that easy to get )
- A toolholder ( can hold 1 extra tool/weapon )
- A waterskin
Note: These are just suggestions. Discuss below wether some are overpowered or not necessary. Let me know if you have a suggestion too.