I'm going to throw out some quick ideas over the next couple weeks pointing to possible future paths for virtual worlds. For today, imagine if anything you saw in Second Life could be printed in 3D with a few clicks. Wouldn't that be cool? All it would take is a script to export objects to a compatible file format. In a few years, affordable desktop 3D printers will be commonplace. A little further down the road, large printers will be able to output full sized furniture, sculptures or even parts that can be assembled into houses, as in this video.