2d sprite rigging control attached sprites

Hi, i m new to sprite rigging in unity, and what i m trying to do is have multiple versions of hands (fist, relaxed ...) and switch between those based on states (like "is the character holding something" "is it playing a waving animation") another example would be winking eyes.

my solution would be to draw the different versions, give all of them a bone, animate all of them and control which ones are visible using masks or something.

what i would like to do is have only one bone and control which sprite is attached to it (maybe using weights?) or if its possible to disable both the geometry and the bones using code, as having multiple bones and invisible sprites animated seems kinda ... not clean.