I hadn't intended to make this a cat-themed post, but I discovered this brilliant milk-carton house for cats over at Design Sponge, and today's theme was set. So, today I present the CatCase, a kitty palace in which cats will permit your books to reside.
CatCase is one of Urban CatDesign's modern furniture pieces for cat owners (the company also makes the CatScratch and CatLedge). This bookcase keeps books and cats separated via walls behind each book section, and carpeted areas protect the surface from claws and prevent cats from slipping.
It can be yours, in a multitude of colors, for €1,125 (currently 10% off), with free shipping available within Europe. You can view more photos and info here.