I probably have around a thousand yards of fabric. I actually counted how many yards were in my cupboard when I moved time before last. That was almost 5 years ago and I have probably more than doubled it since then. I've used a lot since then too but it seems to come in faster than it goes out.
I have mine sorted by length of the cut.
I had one of those three drawer carts crammed full of scraps. I moved most of it into a single giant drawer in my new cutting center. It's not really new new, it's an ancient metal dresser I'm putting a top on to hold a cutting mat.