Breaking Consumer Report: Ostensible "Shake Flashlight" From Dollar Store Not What it Appears to Be! Inventor and Product Tester Zachary Snyder has the story.
I admit that the main reason I decided to caption this video is because I'm jealous of his action figure collection. I found it randomly while searching YouTube for how-to videos and it amused me. I also kind of covet an illuminated toothbrush, though I think if you're gonna do it at all, do it properly and spring for the $30 Faraday model.