Tip for a portable design wall

Margo, from Idaho Falls, was in Karen Combs' class with me last Saturday. She gave me a great tip she learned from another quilter, on how to put together a quick and portable design wall:

She used 2 dowels, 6 huge paper clips (clamps), and a cardboard cutting mat. Fold the outside flaps in, hold one of the dowels behind it, clamp it with 3 of the clips.

Then, turn it end to end, and repeat.

The design wall is large enough, light, and you can pin your blocks onto it when you are not allowed to pin them onto the classroom wall! Cool!

Have you any other tips that can make your traveling sewing room more efficient? Let's hear it!