We are cleaning and organizing. I find that I require some ideas on how to store my Stampin up stamps that are in the plastic cases. Right now they are all stacked on two very deep shelves, so to find anything you have to empty the whole shelf, so not working for me!
Sorry I'm no help if you are talking about the old style. My old style cases (wood mount SU stamps) are just stacked on shelves, too! I don't have too many, so its manageable and I would at least recommend trying to get them to shelves that aren't too deep. Mine all have the name of the set on the edge that faces out.
If you are talking about the new style that are in DVD cases, there are quite a few storage options if you google dvd storage. Or check out some ideas on Pinterest. Personally, I have wall mounted cubbies that were from Pottery Barn (Teen, I think) years ago. I plan to add some storage units from Stamp-n-Storage Stamp-n-Storage in the future.
I store all stamps, mostly wood-mounted rubber, in a flat file (ie discontinued PB Bedford 5-drawer cabinet similar to the Ikea Alex drawer on castors). The only exception is inexpensive mini clear sets that are stored in baseball card protectors in a standard 8.5x11 school binder. HTH, & happy organizing!