Let me continue to spread the gospel of the re-packager! I keep all of my boxes and occasionally will take a figure from my shelf and put it back in the package to display. a flap is cut in the bottom of the package, starting with the perforated edge against the cardboard back, so the contents can be slid out. A piece of tape is all you need to hold it together once it's been cut like this. You can also utilize the custom clamshell art linked in my signature for a more vintage look to your "MOC" figure displays.
The only drawback to this style of collecting is that my closet is now completely packed with MOTUC boxes!