so the snake company has one on their website, but their site is hideous, so here someone posted it on a gecko forum.

http://www.geckotopics.com/index.php...85fb94c981df40



also reptiles magazine recently had an article on making a cooler incubator

or look up ginevives incubator articles on here. although i feel that a styrofoam cooler would not be sturdy at all