We found ourselves with a lot of hours before Daddy got home today, and it was far too hot to be outside. Time to whip up some bathtub paints. Equalish parts of shampoo and cornstarch, and a few drops of food coloring. The kids had a lot of fun. Had to fill the tub up once to clean off the paint, and again to clean off the kids, but since the paint is made of soap, it comes right off. We have a clean tub and clean kids again, with some seriously pruny fingers!