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by londons_explore 1711 days ago
This kind of thing:

US $9.50 5V 1200mA 6Watt Battery Charger USB port DC 5.5*2.1 Charge Regulators Solar Panel 6W https://a.aliexpress.com/_u842IG

Probably won't be sufficient for a router, but it would charge a battery bank or phone pretty well (make sure it's angled 30 degrees south, and use a usb battery bank between it and the phone because the phone usually won't adjust the charging current up and down as clouds come over). For laptops, use a power bank with a laptop 19v output.