I found my stash to be more manageable when I took the time to organize it so that it is folded and OUT on shelves, not away in boxes. In boxes, if I wanted to find something I had to dig. Sitting on shelves I can visually scan. For 1-5 yards, I used the comic book backer boards to wrap them like a bolt. For larger than 5 yards, I just folded. For smaller than 1 yard, I folded; but in a different way so it fits in slide out bins (that are also on the shelves).
Seeing the fabric means 1) I don't feel the need to buy more and 2) I can easily find things to use what I have!
(Oh, and some of it is washed, some is not. I can tell by the edges. I DO NOT store starched fabric. That is asking for bugs.)