Over on the About.com quilting forum, there is a permanent Organizing challenge. There was recently a suggestion to use comic book boards to wrap fabric.
So, I bought 300 (at $10 for 100, it was a small risk). I love this method! I managed to get what took a full unit to store in only two shelves. I also realized I have a lot of fabric. I've ordered 600 more boards. And, that probably won't be enough.
Just think: 1000 x .25 yard (conservatively) = 250 yards of fabric! And, that doesn't include the larger pieces I'm not wrapping.
This is what the shelves looked like before.... some semblance of order (sorted by color)....
And, this is my organized unit. This unit has just about the same amount of fabric as the one shown above. I did have to re-space the shelves, but I can get more on less space, so that's OK.
Back to wrap more fabric :).