Peeps have long been used as subjects in cruel science experiments. Below is a link to a 1999 middle school solar cooker project -- using, you guessed it, a familiar-looking marshallow being.
http://www.coldwater.k12.mi.us/lms/planetarium/stuff/solar-bbq.html
Fortunately, the Peep seems to have prevailed, at least in the first experiment that was conducted.