Here is a great way to work on fine motor skills. Picking up water beads with tongs. They have to squeeze the tongs just hard enough to pick up the bead, but not too hard or the bead will break apart. They really loved the challenge, although I did have some that just wanted to squish the beads. So, you kinda have to know your kids to know if this activity will be a good fit.
I had them transfer the beads from the tray into the small container. For even more of a challenge, you could have them transfer the beads into something with a smaller hole, such as an empty plastic water bottle.
This really took a lot of concentration. Sometimes children want to use both hands, so make sure you let them know if you want them to use only one hand or both.
What do you do to practice fine motor coordination with your kids?