I am a crochet patternaholic. I am constantly printing out patterns and buying pattern books and was having trouble organizing the stacks. I bought a couple of magazine racks (like you see at doctor's offices etc.) and now I keep my patterns in the slots. I will label them as "baby", "child toys", "hats", "slippers", "afghans", "lapghans", "prayer shawls", and "miscellaneous".
This rack can be attached to the wall or, in my case, I stood it up against a wall at a slight angle. This sure makes finding my printed patterns easier. You can usually find these racks at "going out of business" sales or at resale shops.