The beauty of devices that recharge via USB is you don’t need a separate adapter for each one. I highly recommend one that is barely larger than the prongs, and does not have an attached USB cable (more on this in a moment). The adapter that came with my HTC Evo Shift, for example, is about 2-inches long in total, and I didn’t even bring that phone with me.
If none of yours are really small, or they have attached cables, Amazon sells a bunch that are tiny. The $10 AmazonBasics Wall Charger shown above isn’t the smallest you can get, but it has retractable prongs, which is nice.
Apple sells one too, if you feel like getting ripped off.
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