I've been meaning to share some pictures of the new stamp storage system my mom picked up for me the other day :) They are called "Stamp Keepers" and are by "Inque Boutique". They are thin, "acid free" (which is very important) clam shell containers that are designed to fit in a three ring binder. They come in two different sizes 8 1/2 X 11 and 12 x 12. The ones my mom got me are the 8 1/2 x 11.
This picture shows you how thin they are. This is five of them stacked together. Also, if you are used to the SU! clam shell boxes, then you should note that these do not seal in the same fashion. They are a looser fit, but I find this allows me to easily open the shells when they are inside the binder.
Here's a pic that shows you how many stamps you can fit in them. These are my Inque Boutique stamps and they stick right to the clam shell. The "Stamp Keepers" also work well if you use Aleene's Tack-It Over and Over for your unmounted rubber stamps. Unmounted stamps on cling foam would not fit well in these because of the extra thickness. For unmounted rubber stamps on E-Z Mount/cling foam, you could use these acrylic boxes which come in two sizes, CD and Long.
I also store my clear stamps in them. I keep the stamps on the printed image sheets (what's the correct name for those anyway :) and then stick the back side of the stamps to the clam shell. One of the great things about these is that I can easily fit my larger stamp sets in them.
Lastly, seeing I was outside snapping pics, here's one of my blue hydrangeas :)
If you have any other questions about them, just let me know and I will try to help you out!
Have a great day and happy stamping :)