I bought 2 8x4 sheets of foam insulation, less than $12 for both, and screwed them to the wall side by side. I can pin blocks to them, (using longer quilting pins)but they won't stay up by themselves, I will cover it all with fleece. even pinning it really helps. I also have a 3x3 ft square of cardboard coved with fleece for smaller work at the sewing machine.