I have too many! {{{GASP!!!}}} I store them in a large Rubbermaid tote/bin. I also have a large carton of quilting magazines (mostly The Foundation Piecer - stopped publishing years ago). I am currently putting my loose patterns (cut from magazines) into page protectors, then into 3-raing binders. I, too, am trying (how hard, I don't know) to declutter my sewing room.
Anita