The Murphy Desk - "The space-saving design hangs from the wall and opens to reveal a small storage area behind the door and a table top when folded down. When closed, the Murphy desk transforms into a chalkboard or corkboard - the choice is up to you.
This is such an amazing idea. I've already thought of two things it might be useful for: a) No headphone cords when running. b) No headphone cords if you fall asleep (just in case they get wrapped around your neck)