Is Miss A old enough to use scissors? Could make snowflakes (fold a circle of paper in half then in half again and make little cuts out of the folded side). If she can't use scissors you could do that bit, then they could just decorate them with glitter/paint etc. Tie a length of string onto one side and you can hang them up. Maybe more of a christmas/winter project though!
Finger painting or potato painting?
She likes to 'TRY' and use scissors, might go out and buy her the kiddie ones that only cut paper.. she's 2 going on 10 and thinks she can do all these things on her own.. although she does do a pretty good job.

Ohhhh Potato painting... see ladies THIS is why i come on here... for my sanity.
We made DP a 'replica' of his ute the other night, out of an egg carton and bottle tops.
DD also made his work ladder out of pipe cleaners, his numberplate and a toolbox was so cute.