I've found myself amassing a collection of SIM cards from my travels to different countries, and it's starting to become unmanageable.
Currently, I'm using plastic bags. Each SIM card goes in its own bag with a label indicating the country and phone number associated with it. It works, but it's somewhat bulky to store and difficult to sort through.
How can I keep my SIM cards organized in a way that I can carry a collection with me, keep them organized by country and be able to quickly and easily locate the one I need?