My kids had a wonderful time making, and painting with, scratch and sniff paints. We got several packages of Kool-aid powdered drink mix. In the separate compartments of a muffin pan, we mixed the contents of each packet with about half a tablespoon of water. We had one packet each of red, blue, and yellow Kool-aid, which we mixed to make all the colors of the rainbow. I just had to include a little science in our painting fun!
P.S. I am counting on you to ignore the mess on my floors and the fact that my kids are still in their pajamas = )