This is rad. I'm a fan of physical user generated art. My fridge is plastered with Stickygram's. Etch (print your Foursquare check-ins) and ArtCorgi (original commissioned art), are a few others that come to mind.

Pretty cool iPhone app that just launched. Madesquare lets you take any square photo and put them on physical home decor objects including wood blocks, photo strips, and canvas scrolls. You can design and purchase these products directly in the app which are then shipped out, either to you or friends/family.