Coghlans Dynamo Flashlight: http://www.coghlans.com/products/dynamo-flashlihgt-1202 available eg Anaconda @ $10.99: Wind the handle for 1 minute to get up to 7 minutes of light. Features 2 bright LED lights, 10 Lumens. Positive feeling ON/OFF switch. Convenient key chain clip. Configured as a headlamp as shown, total weight 21 grams. This would make a good emergency torch. Will still work after all your batteries fail. Bright enough to read a book at night, to cook your dinner and do your camp shoes.