Nathan Pryor (HaHaBird) made this fantastic life-sized illuminated Minecraft block for his son's birthday. It's lit with RGB LEDs so the color can be changed via remote control.
"I've seen small lamps before, but blocks in the game are one-meter cubes, so why not make one life size?," Pryor writes. "A full cube would be too much, though, so instead I chose to do only one face."
More build notes and process photos can be seen here.