You can get tiny rubber hands that each go onto one of your fingers. There are lots of vendors that sell these on Amazon, and presumably many other places. Different skin colors exist.
I’ve also seen even tininer ones that you can put on the first set of hands, so maybe you can find those as well.
The article is very misleading. It says
But I read much of the pdf linked at the bottom of that link, and there’s nothing about the human body generating energy at 40MHz. The trick is that skin is pretty effective (sort of) at conducting energy at that frequency, so the authors hooked up a power transmitter worn on the forearm, 5 or 15cm away from a receiver on the hand.
This isn’t about powering anything by body energy, it’s about strapping a battery-powered transmitter somewhere on your body and then having another device pick it up when strapped somewhere else on your body. No thanks.
Oh and it’s actually pretty inefficient and won’t provide much usable energy.