Perusing the portfolio of interiors photographer Rachael Smith, I did a double-take when I saw this bookcase in a designer's home. A side chair and stool were designed to slide into the form of the bookcase itself. I'm not sure who makes this bookcase, or if it's a one-off creation. But I think it would be ideal for small spaces like studios where storage for spare seating is at a minimum. And yes, the bookcase also cues in on the tetris-inspired bookshelves trend. And that baby blue! Love it.