There is always room for more. Genius!
If you have room for that bookend to move around, you clearly don't have enough books. Time to go shopping!
Use every inch of space for what is important to you. I heartily approve!
Faded spines be damned! Give your books some sun!
I'm one of those people who sometimes tries to read and walk at the same time on my way home from the bus. This looks way safer.
With a bookshelf like this, guests will never have to know you own a complete set of Sweet Valley High first editions.
Just try to get me to leave this corner, just you try it and see!
Ooh, old-timey schoolboy chic!