Have you ever used your cell phone as a flashlight? It’s not terribly bright, but just bright enough you can see stuff if it’s pitch dark (for example moving around your house in the middle of the night without tripping over stuff).
It gives off a faint/eery glow that lets you see about 2 feet in front of you. Someone should make a movie about a boogieman that you can see in the dark only with your cell phone light. It would be suspenseful for no other reason than you can only see 2 feet around you.
Oh, and whoever makes that movie, give me some money for the idea too… thanks.