A quick tutorial how-to:
Update - - lots of people asked about the size. Trevor bought one piece of pegboard and had Lowes cut it into 3rds (easier to transport). Then for one case he took one of those thirds and cut it in half, making 2 sides to the case. Each side is 24inches across the top, 30 inches from top to bottom.
Make a frame with 1x2s:
Cases in action:
AND, if you're looking for display things, you might want to check out the tutorial on my spinning display rack: