So my three year old loves playing with playdoh and it's horrible trying to keep my one year old away. If I let my 1 year old play with the play doh, most of it will be eaten. So I looked up edible play doh and found a great recipe. It tastes terrible, but won't hurt him if he eats it, and it smells good. It also allowed my boys to play together. And to my surprise, "AW", my one year old was entertained for 30 minutes! And "A", my three year old was entertained for 2 hours!! Of course I played with them so it wasn't free time for me, but it was fun.
Check out this blog for the recipe: http://www.dealiciousmom.com/edible-play-dough-10-yummy-recipes/