>>96164Some "canon" ones I know are:
Reimu-suku having a smal donatiom box and she likes it when shiny round things are put inside.
Marisa-suku collects random objects and hides then like a squirrle as well as being able to do very minor magic powers such as shooting a soothing beam from her hat.
Sakuya-suku is a certified maid.
As for others I'd like to imagine Chimata-suku sets up her own little market with random items she's found and likes it when people "trade" items with her.