SAILS

Ok, so I admit lusting after that remote-controlled helium blimp I saw in the toy store when I was 11 years old. Here's a rather new twist on that concept, as they're not only helium-filled and mobile, but autonomous, with an urge to stack themselves into structures.

http://www.mascarillons.org/PagesSiteMascarillons/MSC-entree.html