Where do you get the tool they use at the Genius Bar to remove SIM cards? I was at the Genius Bar recently and the techs had a tiny tool on their loop of cables that looked like a pin with an oval-shaped loop at the top. Anyone know where to acquire this tool?

I know I could cut and bend a small paper clip, but this looked a bit thinner and sturdier. They used it to pop out the SIM card and clean out the Lightning port.
If you purchase an international or unlocked iPhone, it comes with this SIM ejection tool. They cannot be purchased from Apple, however they are sold on eBay/Amazon/etc.