We've shown you staircase bookshelves, elasticated ones, bookchair ones and now there's this balancing design. There must be something about the form-meets-function nature of a bookshelf that means designers just can't resist them. In this case, "form" gets an added twist with the addition of a pivot and some sliding weights. So you can have a cookily tilted shelf, or slide the weights around to compensate for an unbalanced library: "Maintain the Balance of Your Knowledge" as designer Denis Oh puts it. Weird concept, but interesting. [Yanko design]