I have book shelves like these. What I did was take out one shelf and take it to Home Depot and have them cut me more shelves and the bought extra pegs to put in the holes. With the shelves close together and more of them you can separate them more into color schemes and it makes them a whole lot easier to get something from the bottom of the stack. I started doing the extra shelves when I used them for books and after awhile the shelves started to sag in the middle so this was my solution to saving the shelves and it also helped when I started getting rid of books and replacing shelves with fabric.