Talk about minimal! Caroline Woolard and Elizabeth Tubergen of the 6 Foot Collaboratory have designed the simplest of all possible tables, supported entirely by the cooperation of the diners. Designboom writes that "users must band together, literally holding the furniture together with their bodies." Just don't forget the salt.
The designers share tea by the shore of Lake Michigan. It doesn't look easy. They also have a bookshelf design that looks harder still, on Designboom