Tonight we painted... with marbles. What fun! Just cut the paper to size, dip the marbles in paint, put the top on the tin, and shake or spin. S and K loved it. I loved it too - just about all the mess was contained within the tin and a snap to clean up. Those are my favorite kind of art projects! The only hard part was getting the paper out of the tin afterwards. A little bamboo shish kabob skewer ended up doing the trick.