I don’t have a large stash so I’m going to give you my experience as a long-distance motorcycle traveler. To fit more things in my bags, I’ve found rolling tightly allows me to stuff more clothing items in a bag than I can if I fold them. I’ve ridden to Yellowstone National Park twice to work for 3 months & carried my things for that time on my bike. I did use those vacuum bags for pillow & towels & bought work shoes there, but I got a LOT of stuff in the bags! Non-riders are always amazed at how much I can carry on a motorcycle. So give it a try to see if rolling the fabric helps. Of course, while going through your fabric, you may be inspired to start new projects to use it instead of storing it.