Here is my Cicada dagger from The Flash. It's mainly designed for dual nozzle print, but there is also single nozzle file available. In case of single nozzle, I'd recommend to print it in clear and then paint black whatever leaving some clear bits exposed.
I used 2 orange LED's powered by one CR2032 3V battery which just fit inside the model as it is (without scaling). There is also round hole for push button on top so it will lights up when you grab it.
I will try to scale the model to make it similar size to the one in TV show soon.
Physics, 3D printing, Programming, Astronomy and Sci-fi - that's me \//