I was guessing that's what it was because of where it was. It being your design, I obviously hadn't seen that one before.
I keep telling myself I need to build something similar. At one point I had some schematics someone posted somewhere that I'd tweaked a bit. You've inspired me to get back to it. If you care to share any of your inspirations, do/do nots, from yours I'm all ears.
To add something to the thread rather than being a complete pirate:
My just-as-simple LNL light consists of a cheapo LED flex-head light and some adhesive backed velcro. Lots of adjustability between the flex head and the velcro mount to get the beam right into the case mouth.