Currently, a person could stuff 75L of water in the best belt. The fact that you can stuff 25 two-handed axes is also strange.
To make it less of a wierd thing, I suggest that belt would accept holsters instead of plain tools and items. Some of such items might be:
- A sheath for a sword
- A holder for multiple tools (like keyring) - for axe, saw etc.
- A waterskin
- A quiver that holds both arrows and a bow
Along with addition of such items, belts should become smaller, allowing different amount of holsters - i.e. from 1 to 5. To put an item to belt, you'll need a correct holster for it. Holsters might take up different amount of "slots" on the belt, so a holster for a B12 would be larger than one for a stone axe. The idea is maintain the convenience to use tools, but get rid of ridiculous situations with barrels of water attached to the belt. Also, maybe make character look cooler with a sheath!