The Gravity Powered Bookshelf by designer Leo Kempf solves the problem of books falling over on shelves without a bookend. Besides being a really sensible design, this piece of furniture is beautiful too, like sculpture, so you wouldn't want to hide it behind other furniture. The main center beam is made of red hardwood, while the shelves are constructed out of curved birch plywood. The effect is to have gravity press books down so the outside edge of the bookshelf needs no support. Unfortunately, it's not available for purchase yet. If you want to receive notice when it is for sale, go to Leo Kempf's website and send an email.

Via modern self.