Light-up geeky apparel items usually get quite the response from you guys. Having said this, take a look at the latest addition to the LED fashion line: These high powered multi-colored lighted flip-flops.
Featured on Gizmodiva, each pair flashes green, red and blue through clear plastic as soon as you walk. They cost around $8 and are available in small, medium and large sizes and are advertised as being the "hottest item in a decade." I'll leave the rest up to you.