With respect to worrying about SIM cards and tools for travel:
- I’ve had my home cell number transferred to the eSIM in my phone. When I get the travel SIM, I generally depend on the phone store where I bought it to put it in. At the end of the tripI just leave it until the next time I actually need a physical SIM.
- Before eSIM’s, I carried the SIM tool and alternate SIM card in the littleSD card case from the days when I took pictures with a pocket digital camera. Going to the foreign location, I stored it with other things local to the destination (transit cards, currency, etc.) At the destination, that storage converted storage for things useless on the trip but necessary when I returned (house keys, transit cards, US currency, etc.).I usually dedicated one small pocket in my carryon bag and a sandwich bag or two for this purpose.