Here is a version from Alton Brown:
Renate Haeckler wrote:Pretty cool! One small observation tho, if you use a teflon coated pie pan like it looked like he did - when they overheat they give of toxic fumes - enough to kill a bird on the other side of the room. Might want to go with aluminum to be safe.
Yes! I posted that particular link because Alton Brown's version seems to be the most well known DIY tandoor. There are so many other options to choose from. I wasn't even aware of clay pot cooking, except as a vessel for an oven, until yesterday.