My biggest wish for this is, I wish the instructions were better written. However, it's doable with concentration and not having 3 needy kids around. Cute but functionality is meh. Perfect fits are “I can read”, “step x”, or Dr. Seuss books. My Berenstein Bears books fit height wise but do hang out slightly. No biggie. My 2 yr old has spun the case fast and nothing has flown out somehow another. Another small complaint is my book case came with wrong pieces and I notices some stretches on the top wood. It is what it is. I just wish it was “flawless”. My kids love the spin option though!