This cable is kinda fascinating - it has an integrated boost converter, so you can plug it into any USB port (from a computer, battery pack, etc) and
Usb Power Boost Line 5v 5v/ 9v/ 12v Step Module Usb - Temu
USB to 5.5mm / 2.1mm DC Booster Cable - 12V Output : ID 2778 : $6.50 : Adafruit Industries, Unique & fun DIY electronics and kits
5V to 12V Step Up DC Converter,5V USB to 12V DC Step Up Cable - 5FT 1.2A Boost Voltage Transformer Power DC 5.5 * 2.1MM Converter,Compatible with Power Bank/CCTV System/Monitor/Camera/Speakers - Yahoo
Reliable and fast data transfer. With this cable, you can connect your power bank to router. Thus, when power cut, you can use your power bank to
LANMU USB to DC 12V Adapter, 2.1mm X 5.5mm USB 5V to 12V Step Up Converter DC Jack Power Cord,USB to DC Cable (3.3ft/1m)
Brightvine Power Cord 1 A 1 m USB to DC Power Cable 5V to 12V USB Cable with DC Jack 5.5 x 2.5mm or 5.5 x 2.1mm for Computer, CCTV Camera, WiFi
5v 2a usb to dc barrel
Power the other equipment through the charging treasure. Such as: router, USB light, USB fan, small LCD TV, car purifier, 5V mini speaker, etc
DC 5V to 12V 1A USB Power Supply Converter 5.5*2.1mm 1.3M USB Boost Cable
5v Usb Dc 9v 12v Step Module Converter Cable Usb Boost Cable 5v Step 9v 12v 1a - Power Cords & Extension Cords - Aliexpress
Universal USB to DC Power Boost Cable Charger Cord Plug Router Mini Fan Speaker
LANMU USB to DC 12V Adapter, 2.1mm X 5.5mm USB 5V to 12V Step Up Converter DC Jack Power Cord,USB to DC Cable (3.3ft/1m) : Electronics
5V 9V 12V DC to Type A USB Power Boost Line Step UP Module USB Male Converter Adapter Cable 5.5mm*2.1mm Plug Jack Power Cable B4 - AliExpress
USB to 2.1mm DC Booster Cable — PMD Way