... in 1956, Play-doh was invented by Noah and Joseph McVicker. Originally intended to be wallpaper cleaner, Play-doh is one of those "succesful failures" like chocolate chip cookies. It was only available in off-white to begin with and sold in 1 1/2 lb. cans. Later that year, three more colors were introduced; red, yellow and blue. Today, kids have a choice of colors ranging from Paradise Purple to Garden Green. According to Hasbro, the current owners of Play-doh, the formula of the original compound remains a trade secret.
So play with some Play-doh today or go clean your wallpaper if you want to. Maybe try to make your own Play-doh and see if you can discover the secret recipe.