Here's a picture of how most of my stash is stored. I have quite a few "buckets" in the garage, several of those are back sized pieces. I have them folded so I can see at a glance, without digging in them, what is in there. I fold 2 yards down to 1/2 yard one way, my over 2 yard pieces are folded another way and my pieces large enough for backs are stored in a separate cabinet. I have put 1 yard pieces of my very large pieces stored in the garage into my cabinets so I don't "forget" that I have them.
This is how I fold and store the fabrics in my garage. Though, I have resorted and refolded so this particular bucket does not look like that, I separated flannels from cottons and there are a couple flannels in here
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The cabinet in upper left has back size pieces
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