Stain Detector Light

If you want to look like a snazzy detective while checking your carpets and furniture for those invisible stains and spills, this Stain Detector Light will do the trick. Looking straight out of Law & Order or CSI, it's a tiny handheld fluorescent blacklight that will illuminate those pesky stains invisible to the naked eye, allowing you to either clean them up with some high-powered stain remover, or throw out the offending item if the stain's just too tenacious. For extra fun, take it with you next time you stay in a cheap hotel! $6.99 USD. (Via Gizmodo.)