I don't have this problem as I never work on more than one thing at a time. I usually have a quilt to the "sew on the binding stage" and maybe another I'm piecing. I only make charity quilts for kids. So sometimes I do two at a time. I only buy the fabric I need for what I'm working on. So no stash storage problems. I save the scraps from each quilt and when I get enough I make one out of all that.
I know, you can say it, I'm weird in the quilting world.
SVAL