Quote Originally Posted by brushnjigs View Post
There is a baking clay (sculpey) is one brand name. This is not as soft as play-do but it is made for baking. Playdo contains some Vaseline so it will not bake to a solid form.
you can use many types of clay that you would put into a pottery oven and bake it but of course you would have to put some type of glaze but you would deftly have a mold that would last you a lifetime you could also use many types of clay and make a impression and pour plastic into them the same as you would do with the potty that has been mentioned.