Mobility & Medical Supply

Two Large

Two Large
I have two large shelves that I put 12 sections of books / folders. How do I label the sections?

I do not want to put stickers on the shelves themselves because of aesthetics and the fluid nature of the sections (which can grow or contract). I'm thinking of something like this, but how I get to stay in place? The shelves are too deep for most of the chips and will lose his place.

There are things plastic you can buy at the hardware store that allow you to put some kind of role in the small space plasitc. So buy plastic things, write about the paper, and insert the paper into the plastic space.