Right now, Amazon has the Anker Prime 67W USB-C brick for its lowest price of the year. Anker Prime 67W USB C Charger, Anker GaN 3-Port Compact Fast PPS Wall Charger $35 (was $60) Buy a few and chuck them in your bag. Anker See ItThis charging brick has two USB-C ports and a USB-A ports so it can power up to three devices at once. It offers the same pair of USB-C ports and a USB-A. It has three USB-C ports in addition to one USB-A.