Let's say you have a really nice (i.e. highest quality you can find on Amazon without broaching audiophile turf) USB-C cable or two, and want to be able to use it without a charging block when you're on the go. Can you guys think of any airlines, airports, hotels, cars, restaurant chains, etc that provide enough boost from their own ports to make this possible? As I mentioned in my OP a year back, I'm really into weight optimization, and even my smallest charging block is burdensome.