that I'm using to store CDs and other stuff I don't really need ready access to. Because that looks quite ugly, I'm putting any vinyl box sets I have at the front of each compartment, facing out - the problem is some of them are quite thin boxes and are prone to just falling out the front.

Ideally I'm looking for some kind of clear plastic lip or something to prevent these from falling forwards - does anyone know where I can get anything like that (or have a better solution)?