For the teeny tiny bathroom. Good for phones (of guests) or air-freshener or even a few small decor items. Not books though...yuck, I can't abide by the thought that people in a toilet performing excretory acts are handling books...
Add more shelving space to your small bathroom with over the toilet storage.
Cute way to hang towels for guest bathroom
Built-in shelving for the bathroom but maybe some open and some closed for the things you don't want to see