I found this fun idea on Pinterest. It reminded me of when I was a little girl and my dad used to put little piles of his shaving cream on the side of the tub for me to play with. Wes uses an electric razor so we had to make a special trip to the store for this one.
It was originally meant for the little girls but the big kids could not resist joining in the fun.
It was a great idea except for the fact that it sort of died the white grout. Oops. We sort of have rainbow grout now. But I figure it will bleach out just fine and I really don't care much for this bathtub anyway. Hopefully someday we can replace it.