Tiger Lily is only two, but I've decided to start some preschool activities with her because we have the time while Red Chief is in kindergarten. I found some art here (not very high quality, but it looks infinitely better in black and white). Since then I've found better-quality stuff here and here and here (there are dot paint pages in many of the themed packs).
We've done some art and counting with these paints before (bingo markers from the dollar store), but I thought Tiger Lily would enjoy the structure and challenge of having a specific place to make the dots. She had a great time, and she insisted that we take turns—she did a dot on her paper, then I did one on mine. So I got to have some fun too!