Like many of you I have a lot of quilting/sewing magazines.
If a particular issue only has one or two patterns I want to save, I cut them out, file them in a portable pendaflex file box and toss out the magazine.
Frequently though, there are several patterns is one issue, so I want to keep the entire magazine. I dislike having to search through dozens of magazines for that one pattern so this is what I do.
I bought two small Rolodex file boxes. When I find a pattern I like, I write on the top of the card what the pattern is (watercolor quilt, bargello quilt, log cabin quilt, etc.), and a brief description. Then on the bottom I record what magazine it is in, the date of issue, and the page number. This makes it very easy to find the pattern I want to make.
I have all my magazines stored in magazine files and have them in a bookcase.