I "googled" harbor freight mini dynamo led
and I got http://www.thefind.com/sports/browse-mini-dynamo
This reminds me of the Solar-Powered Anti-Mosquito Guard. http://www.amazon.com/Goldmaster-Anti-M ... B000TFNSGO
It actually works.
I had a keychain Solar-Powered Anti-Mosquito Guard device that emitted the sound of a dragonfly with me at a retreat on the ridge above Carnelian Bay at North Lake Tahoe. People would stand near me, having observed mosquitoes would not come nearer than 12-15 feet from me.
Dragonfly's eat mosquitos.
The best part of the story: the retreat had a famous swami, well-educated people from around the world, and me. I first noticed people in two's and three's would comment, "Who is she?" Like that. I also noticed quite a few people would crowd in close - people would stand near me. The mosquitos were in the zillions everywhere, except in a "bubble" 12-15 feet from me. "Is it her aura?"
Finally, one lady asked. "Have you noticed mosquitos don't bite you?" I said, I understand my body has alkalyn balance, a reference to Ayurveda. They don't seem to bite me. But it is, taking the zipper-pull attached Solar-Powered Anti-Mosquite Guard in my hand, probably this Solar-Powered Anti-Mosquito Guard. It emits the sound of a dragonfly, and, dragonflys eat mosquitos.
I don't think she believed me! Probably thought I was playing a joke!
After all, it was probably my aura.