Here's what I posted in the other thread.
I tend to buy fabrics from a single line or ones that I picked out to go together so I store them together like that. But right now they are folded and stuffed into a cabinet. I bought some of those comic book boards to fold them onto and organize but they seem kinda flimsy. I read about it on several blogs. I know about the plastic sign material but I couldn't find a sign shop that has it around here.
Here is the thread-there are some more ideas in it:
http://www.quiltingboard.com/t-83589-1.htm