I created this model to be able to strap a Gravastar 65 watt USB charger to my shoulder for DefCon31.
Friction fit on the us standard plug.

Amazon link to the charger if you want one: https://www.amazon.com/Charger-Gravastar-Station-Foldable-Adapter/dp/B0BZPJY72Z/

Direct Gravastar link: https://www.gravastar.com/collections/chargers