You can make homemade children's modeling clay-like stuff, but you can't totally recreate Play-Doh, because it has some special ingredients to make it last. Nothing dangerous, of course, but the recipe makes it clear that Play-Doh is easier to buy than to make in your kitchen. This video was produced by Giant Ant for Wired's What's Inside series. -via the Presurfer
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"Can't be made at home due to unusual ingredients..." Aluminum sulfate = baker's alum. PEG 1500 is a slightly lighter molecular weight version of the PEG 3350 in Mira-Lax. Amylopectin is just corn or rice starch. With some effort, I imagine the 'doh' part would be pretty easy, though probably more expensive than buying it ready made. The smell on the other hand would be difficult to replicate without knowing most of the ingredients.
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