There are many schemes to organize books: alphabetical order, by author, or even by color.
This Equation Bookshelf by estúdio breder, however, lets you to organize your books according to a criterion we don't normally associate with an organization scheme: their relative importance!
'Equation Bookshelf' is a simple idea of to divide things in priority order... put together the books that you need immediately or more important between (parentheses)! Set others between [square brackets] and {braces}.
Maybe today a beautiful flowerpot will be the most important thing! Tomorrow a portrait of a girlfriend and so on... A different and funny way to organize your objects!