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After charger, Apple removes USB-C cable from the box
(www.gizmochina.com)
This is a most excellent place for technology news and articles.
I just keep it simple. When I travel, I bring my power bank and a tiny cable to charge my phone. When I get to my destination, I recharge my power bank with a longer cable. At each place around my house where I'd want to charge something (desk, bed, etc), I keep a charger nearby, either already plugged in or neatly stored near the outlet.
I never need to worry about where a cable is, because I always have one handy, and it's just the right size.