Anker Nano Power Bank A1259 — 10K, 30W

Useful for: people who want a compact wired power bank without carrying a separate USB-C lead. Anker specifies a 10,000mAh battery, 30W maximum input/output over the built-in USB-C cable or USB-C port, plus a USB-A port rated up to 22.5W. The built-in cable doubles as a carrying loop, while the colour display gives charging-status information.