Another option are the core boards that M.I.Late (here on the QB) makes and sells. More expensive than comic boards but they'll last longer and she sells multiple sizes - including sizes that are perfect for FQ's and other scraps.

If you do a search on "Easy Cores" or search for posts by M.I.Late ... you'll find them.

I also fold with my 6x24 ruler. Works great!!!

I fold with my 6 x 24 ruler and my shelves look great. The only problem with that is when you have a really large (6 or 7 yards) piece of fabric. It ends up looking like a roll. I usually just fold them into a large square and put them on a bottom shelf. I, too, am moving my sewing room to another room in the house, and didn't realize what a challenge it was going to be. Hubby said, "oh boy! You're finally opening a fabric store. Maybe some of this will leave now." How dare he!!! Nothing is leaving until it's attached to lots of other little nothings! LOL!

A 6x24" ruler?? Don't own one?

I TRY to fold neatly but I think there are wild beasts that get into my sewing room at night and tear the place up. So it doesn't matter what fold I use. I guess I am doomed, but hey it's MY room.

When I re-org'd my sewing room, I bought two bookcases with doors from Ikea and proceeded to refold 30 years of fabric using the ruler method. it took many days. Now it looks gorgeous and is all sorted by color...truly a sight to behold. However!!! In studying the comic book method, I began to see that if one folds and stacks the stash one piece on top of another, the stacks get messed up when you want a piece from the bottom, whereas if you use the comic book/quilt shop method of lining fabric up like books in a library, you can pull out a piece and not leave mayhem behind.
Is it enough to make me want to refold my entire stash? Nah. But it's something to think about.

This is I fold mine, except I don't fold it when I'm done. I usually buy 4-6 yds. or more. I just stack mine on the shelves in my cabinet.

Thank you, everyone, for your input. I'm (almost) excited to start organizing when I get my room painted. I know it will be worth all the hard work when it's all neat and pretty!

I was fortunate enough to acquire a massive amount of plastic 'cardboard' - the kind you see on wired stands stuck in the ground - they're usually used for advertising a person running for local political office. My neighbor won the election, threw all of his signs out on recycle day, but I got to them first. I washed them and cut them down to size (6 x 9) and now my Ikea shelving (Expedit and 2 Billy Bookcases) look amazing!!!

I fold my fabric in half .selvege to selvege, then I fold it half again (fold to selveges). THEN I wrap it around my 6x24 ruler. By doing the second fold before wrapping it around the ruler, you keep the end from having a big bulge.

I have one closet that is pretty deep and for these shelves I fold the fabric selvege to selvege and then wrap it around the 6x24 ruler and store it flat. I reserve this closet for lengths of more than 3 yards.