I was thinking of doing something Steampunk themed for Halloween, and thought I might spend a few hours prototyping a ‘raygun’ prop. This aether cell as far as I got, it would serve as the ‘ammo cartridge’ for the raygun, sticking out of the back at a slight angle.
It’s got a red LED, a cyan ultrabright, and a UV LED, and the fluid is a mixture of diet tonic water, vodka, and highlighter fluid, so you get a very nice eerie glow with the UV LED on.