USB to 5.5mm / 2.1mm DC Booster Cable - 12V Output

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

DC 5V to DC 12V USB Voltage Step Up Converter Cable, Power Supply Adapter Cable with DC Jack 3.5 x 1.35mm, USB 5V to DC 12V Cable - 5ft : Electronics

USB to 5.5mm / 2.1mm or 2.5mm DC Booster Cable - 12V Output

USB DC 5V to 9V/12V 1A 5.5mm x2.5mm Step UP Module Converter Adapter

USB 5V to DC 5v 9v 12v 12.6V 8.4v usb mini 5pin type c MALE power boost line Step UP Module connector Converter Adapter Cabl p1(5V to12.6V)

USB Charging Cable with booster module Line USB to DC 5.5mm x 2.1mm 5V

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

USB 5V to 12V Boost Step Up Power Supply Cable Converter Interface 5.5*2.1MM

USB to 2.1mm Male Barrel Jack Cable [22AWG & 1 meter] : ID 2697 : $2.75 : Adafruit Industries, Unique & fun DIY electronics and kits