What A Great Little Flash Application
This goes into the "Why didn't I think of this?" category (oh wait, I know why...because I can't program in Flash. Duh...). But the concept of the Sketch Swap is very simple. You draw something -- anything -- and hit the submit drawing button, and then wait. In a few seconds, you'll get to see a drawing from somebody else that has used the application. Most of the drawings are stick-figure esque (at least everything I put in there is) but some folks are putting in some very cool drawings and you'll see those if you submit enough stuff.