You might like some of the wooden shelving here:
http://www.storesupply.com/c-598-wood-displays.aspx
When I did craft shows, I started out with some very homemade looking display racks. After a few years, I invested in wood racks just like these, and you know what? Since I had a professional looking display, I found that sales went up and fewer shoppers complained about prices.
So if you do a lot of shows... invest in a nice setup. It will pay for itself, plus you get the pleasure of having a good-looking booth. :thumbup:
Be sure to look at the rotating display. It makes excellent use of a small amount of floor space! It also attracts shoppers. They are curious to know what just disappeared around back, when somebody else turned the shelf.