LED Glass Bricks are a recent winner of one of the coveted "Red Dot" awards for good design. It's basically an infinity mirror with integrated LEDs so you get an awesome light show that stretches on into, well, a really far distance. The color shifting blocks can even be computer-controlled, for a really crazy lightshow. Damn these take me back. Back to my days on the dance floor of Studio 54, where, depending on who you ask*, I may or may not have made out with Eva Gabor while doing zooters off Elton John's ass.
* If you ask me, it happened. If you ask anybody else I wasn't born yet.