So, thing is, we got claws and stuff which can break rocks and trees and also destroy dead bodies, but there seems to be no other use. So why not make them be able to gather basic resources? I'm thinking of thatch, wood, flint, stone, meat, hide and kitin/cheratin, maybe some others like polymer, you know, stuff you get from killing and basic resources which would make a lot of sense considering you can even break rocks with some of the functional arm parts.