I had a big blank wall up the stairs leading to my attic, and I didn't know what to do with it. It was too big for a painting, and I didn't have anything large I could hang to cover up the space. But, with some help from Thinkgeek, and my stubborn mathematical mind, I was able to figure out how to re-create the first level of one of my favorite video games.
Yeah, I work best in the nude. Plus it was hot up there in that attic!