Sketch Swap

I remember when I was a kid, someone sent me a postcard and told me to send a postcard to 5 other people and I would get 200 postcards from around the world. I ended up getting one from Illinois. Anyway, here's a site where you submit a drawing and you're rewarded with someone else's. I drew my standard cartoon ostrich and got back a whale and a boat. Guaranteed for minutes of fun.