Managing SIM cards from multiple countries

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?
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How do I make my SIM card work in another country?
When you land in a new country, just go to a local telecom store (the equivalent to Verizon or AT&T, in other words), and buy a temporary SIM. It's that easy. These are often called \u201cpay-as-you-go\u201d SIMs, but some areas have special SIM offers for travelers.Can dual sim be from different countries?
You can buy and use a prepaid SIM card from whatever country you're traveling in to get cheap local calls, texts, and data, while still keeping your usual number accessible. Equally, you can drop an international SIM card into one of the slots, and retain your home SIM in the other.Do I need a new SIM card if I move countries?
New Sim Card Your SIM card is essentially the brains of your phone. When traveling overseas, switching out the SIM card is useful because you can simply purchase a plan in the new country on a local network that will be less expensive and more extensive than any international plan your previous provider was offering.How I Handle SIM Cards and Phone Numbers When Traveling
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