Well this is just brilliant. This 9,000mAh external USB charger has a built-in Lighting cable to charge your iPhone, and also a set of folding AC prongs so you can plug it directly into a wall outlet for charging.
Of course, there’s also an additional USB port to charge a second phone as well, but if you don’t need that, it’s possible to use this charger without carrying any extra cords at all. You’re paying a bit of a premium for that convenience, but I think it’s worth it.