Flashlights often come in handy, but they also can be pretty bulky. Well, this ingenious 9V battery flashlight boils the device down to its most basic elements: a light and a battery. By removing pretty much everything but the light...

Having a gigantic flashlight powered by D batteries in the truck went out with the Pinto. Nowadays it is all about LEDs and rechargeable technology. With cars now including spare 12V DC outlets, better known as cigarette lighter outlets,...