Books don't have to be assigned to shelf. With decor being so versatile these days, just plain ole STACKING them will suffice. The last two images are mine, but the others are just a beautiful way to show off your books without them looking out of place. I read to rid yourself of the paper book cover, and that I did to 95% of my books, and they look cleaner instantly. Its just paper anyway, and sometimes the books have beautiful designs that need to be shown.