I used flannel. I had room for 3 widths, which I serged together. I bought a cheap curtain rod and used cafe clips to attach the flannel. I took it down when I went to class. Just folded the flannel with all my pieces pinned because when moving I didn't want them to float away. I should have prewashed the flannel because I'm getting balls of flannel fuzz on my pieces.
The advantage is it is very large and cheap.