Check out the LED Dragon, kind of a cool DIY project if you know how to engrave glass.
I have to say that even I was surprised how well the dragon version turned out. Three very simple flames and bit of light and magic can really spice up the engraving. And this was the whole point of this project.
It took only minutes to engrave the flames but I have to admit that it took way longer that I expected to get all the taping done, leds mounted and hooked up. On top of all this, it was pain to keep all the layers clean during the assembly.