Here is the first activity idea - modified from an activity learned about/witnessed a long time ago. I don't know who gets credit for thinking this up originally.
For a different way to work on fine motor skills, while standing or seated, play Tic Tac Toe with marbles/beads and golf tees. Push 9 golf tees into a block of styrofoam, and then use two different colors of marbles or beads to play Tic Tac Toe.
Here is a verson, with a wooden base:
When I play this game, I put the block on a towel and the marbles spread out over the towel. This way, we are working on dynamic standing balance, reaching, visual scanning, and UE AROM (at a minimum) all at once; as well as having fun!