My wife is making a couple batches of "play-doh" as we speak. She makes it for a couple of kids classes at church. She uses flour, salt, cream of tarter and some other stuff. A friend of hers just told her that she uses kool-aid instead of food coloring to give it a better smell. She thought it was a great idea, but she is only using half kool-aid so it doesn't make the kids all want to eat it. It is edible the way she makes it, but still not very sanitary after they have been playing with it.