Zen, Zune, Zeno. The last one may resemble an MP3 player but isn't one. It does, however, involve another "Z" word: zits. The "Zeno" supposedly zaps acne by stimulating "heat-shock proteins" that in turn cause pimples to self-destruct, according to a description on Coolest-Gadgets. We definitely would have given this a try in our teenage years but, at our advanced age, the idea of using a device designed to burn things off one's face doesn't seem quite worth it for some reason.