For the vast majority of people, Anker's Magnetic Battery Pack (referred to as Anker 622) is the best option for keeping your device charged. It's MagSafe compatible, so it works best with the iPhone ...
If you’re still in need of stocking stuffers for your techie friends and family, then here’s something everyone will appreciate: a super-fast Anker Nano USB-C cable, now just $19 on Amazon with Prime.