My daughter came up with something that has worked for me. We got two long trim boards, drilled a hole on each end, and use long screws with wing nuts on them. This allows the two boards to clamp together. This is hung from a chain attached to the boards which go through hooks in the wall. I can clamp a piece of insulation board into this and sandwich my quilts. I have even clamped the quilts in themselves and sandwiched the quilts.