Sat down, had a glass of Jameson and made a LED light with my friend Kat. That's just the bottom of a beer can. Poked some holes for the LEDs stuck them in, wired them together with the appropriate resistors.
After the wiring was encapsulated in resin I stripped off the majority of the aluminum can leaving only the bottom for a reflector.
Let there be light.
The result is a waterproof light that produces 110 lumens in a narrow spot and it should run for about 6 hours on a standard 9v Alkaline.
I'm going to use this as a mobile squid light I can deploy with a float. The idea is to carry several at a time. Drop them like you would multiple hoop nets. Light several areas at the same time, and then I can paddle from light to light and see which ones pull up bait.
Jim