Disney sells these things called "Light Fingers", made by Can You Imagine [link]
, and when I fist saw them, I immediately thought HAND DEVICE! (aka, the Goa'uld "ribbon device" from Stargate SG-1
Of course, the light fingers are meant to be worn on the back of the hand, not the palm, and it's black instead of gold, and the center light is reaaally big, and it has lights on the fingers too, unlike the actual ribbon devices, but it's good enough.
I painted it gold, obviously, plus added a bit of colour to the outer edges of the central light. I also had to shorten the finger wires immensely, whic meant cutting off the outer casings and wrapping them with gold thread. For the part that wraps around the arm, I had to construct a framework out of pipe cleaners, then covered it in gold cloth. That still wouldn't quite stay put, though, so I put come clear, stretchy thread at the end of it, in a loop, to keep it in place.
It's hard to take a picture of one's own arm. XD When I have a free moment (hah!) I'll take some daylight shots ...
Goa'uld ribbon device ©MGM/Gekko/Acme Shark/Kawoosh. Check the franchise out at [link]
And check out more of my Stargate-related fanworks at my own stargate site: [link]