A pen style flashlight mod would probably do the trick. It would be tiny but wouldn't weigh alot. You could fashion a small tube for the inhale inside a transparent frosted outer tube that was lit from below. The led would have to be brightened by a reflective dish under it. It would probably need a side fill tank. I'm sure the batt would have to be beefy and it wouldn't be an all day PV for sure. Once the atty was shot it would mean a total rebuild unless it was built to easily disassemble. A few headaches and lots of free time could actualize this. Niether of which I can afford. Cop's picture looks promising though.