If your desk is, by some remarkable stroke of chance or insanity, messier than mine, I will be awarding you with a prize of your own choosing (within reason), or of my own choosing - it's up to you. :)
Clean desks also to be posted. It's all good. Some cheating is allowed, as long as the picture you post is genuinely an up-to-date photo of your desk. Extra appreciation for any interesting objects present, I suppose. Photos of things like a garbage dump or something you found on Google may annoy me, but yeah, could be funny. You can post them.
This should make an intriguing and illuminating collection of images. Best of all, you don't even have to leave the room.
Rock n roll.