Hi Roizhe
Check out this website: http://www.rikermounts.net/catalog.cgi, which sells display cases. Some can be hung directly on the wall. You might also check out the Ebay listings of mosquitobay (a fellow BCN member), here's an item number to enter in Ebay's search box (360437644218) - it shows how Jan (mosquitobay) displays and sells his beads using Riker mounts. He might have some other ideas for you. Good luck. Paul