I don't maintain a 'stash' per se. I do have leftovers from previous projects. I don't have room for a stash to begin with. Beyond that, as many other folks have mentioned in other threads on the subject, I'm sure my tastes will change over time as well as, if I buy x amount of something and decide later on that it would be just the perfect fabric for 'this' quilt, will I have enough for that purpose??? Just what I do.