I keep hearing about the boards used to fold and store fabric, and from what I hear, they're not cheap. Why not use the cardboard that bolts of fabric come on? I've used this for years and never spent a dime on a "board". They're free anywhere that sells fabric. I have closet shelves in my walk-in closet. They're three deep on the back wall and two sides. I have over 400 "bolts" stacked on end in this closet. I sort by color family and can easily "shop" for what I need. My only investment was for the shelves. The cardboards are replaceable for free.
I attached a couple of pics to clarify what I mean.

great job, I love your fabrics organization

I asked for those at Walmart and Joanns but the won't give them away here!

Nice shopping center you have

Can I shop at your shop? I wish I were that organized.

I have seen fabric shops that take the bolts and cut them in half and make mini bolts with the last few yards. They are adorable.

My goodness, you've got your own store!! I like your taste in fabrics, too.

Wow, what a stash you have. I know you have fun shopping there.

My WM and LQS won't part with them. Guess they'd rather send them to the landfill.

That's some stash! Love your fabrics!