Carefully placing marbles on the suction cups of those bathroom thingys. It's harder than it looks. Right now she's using her hand. The next step would be to give her some large tweezers to work with.
Sorting! I have been so ready for this one. I was amazed once again at how quickly she caught on. Now she can fly through this by herself. She'll even correct herself if she places one in the wrong compartment. Genuis! Now I've got to find more sorting materials!