There are precious few battery packs out there with USB-C power delivery, and this 26,500mAh model from Aukey is one of the most affordable we’ve seen.
In addition to the two standard USB output ports, the USB-C port works as both an input and high-speed output port that can charge a 12" MacBook at full speed, or charge your Nintendo Switch’s battery level while playing it at full brightness. It’s pretty huge, but 26,500mAh should be enough juice to power your devices for hours or days on end. Just be sure to use promo code AUXMAS15 at checkout to get it for $56.
It doesn’t come with a USB-C power brick to recharge itself at full speed, but that’s also on sale today for $28. You can, of course, recharge the battery with any USB charger, but this will be significantly faster.