The amazing Invisible Self Shelf isn’t a shelf at all. It’s a fake book that attaches securely to any wall and is strong enough to bear the weight of a large number of volumes. You can stack your books so that they look like they’re floating on air. The best part of the shelf – the title of the fake book is Ceci n’est pas un livre (meaning ‘this is not a book’)! Also available in cookbook and pocketbook format.