I'm proud of my minimal stash - both patterns and fabric. My patterns fill two dresser drawers and my fabric fills three. At some point in the last two years, I had decided that I really didn't need to buy anymore patterns. That's right, within my stash I could find something that, with a few adjustments, could become my fashion vision. (HAH!) Then I discovered Pattern Review.
Long story short - last weekend I decided it was time to purge my stash to make room for all my new patterns. For my pattern filing system I separate my envelopes from the instructions and file them each separately. To begin the purging process I first pull all the envelopes that I know I won't use again then go to the drawer with all the patterns (filed numerically) and pull out the "guts". As I'm doing this I discover all sorts of patterns without matching envelopes, and many of them look like garments I want to sew right now! Some may even be considered, dare I say, vintage. Woohoo! I didn't keep them all, just the ones that I thought I would actually use.