Here is how Barcelona based designer Roger Moliné describes his highly unusual and inventive Level shelf: “Level is a wall shelf that changes its shape depending on the content. When we put books in a category, that grows by increasing the volume available and enabling storage of more books. Thanks to the weight of the books, the shelf reveals the category with more books. So we can compare who read more books, or what kind of books we read more.” Fun, isn’t it? I also love that Lever is super lightweight. It arrives to you in a carton tube, which saves storage and shipping costs. Points for eco-thinking!