It's useful to clean one's room once in a while. One never knows what one can find. When i was preparing to attack the pile of stuff in the corner of the room, i was expecting it to be a boring routine piece of work, but cleaning can be useful, as i learned. Besides finding stuff i had thought impossibly lost i also found two beers, a new t-shirt and a bag full of expired pyrotechnics.
And that was just the small pile of clothes and things in the corner. I expect major finds when i finally get around to cleaning and organising my desk, but that can take a while yet.