I use loose leaf binders and paper protectors for patterns I tear out of magazines. For patterns in envelopes I use those small washbaskets and they stand up in them very well. I catagorize them by ( baby, mini, table runner etc.) flipping through them is easy and I know where they are.
peace

I keep mine in one of the extra large lined wicker baskets (Lowes). If you like the magazine holders, Ikea has the Flynt kind for $1.99 for 5. I bought a bunch of the metal ones (Dokument) from there several years ago, in silver, for all my quilting magazines...those are great.