My personal smallest light is a little dollar store light that had next to nothing for output and was really cool white.
I had one of these that I had gotten from a guy on another forum and I lost it when the clasp somehow broke when I was fishing one night........just so happened I found another just like it about 17 or 18 months later.
I changed out the emitter for a nice warm tint to it now and is actually not a bad little key chain light.
Shown with the Lumintop Tool AAA light and a 14500 cell

Laying on a C8 reflector
