Need to work under the engine in the dark?

Then you should know about the rechargeable LED wrenches. 

Working under the hood of your car, or under the sink. Forget needing someone to hold a flashlight. This wrench set has built-in LEDs that provide directional light without wires or hot bulbs. Their only wrenches (the company says) powered by rechargeable batteries. Recessed lights in the cradle of each wrench head come with high- and low-beam settings for precise viewing while working on any dimly lit project. With three hours of charging on the base, each wrench provides five hours of light. That should certainly be enough illumination for the duration of a project. Made of chrome-plated, drop-forged steel, the wrenches' LEDs also feature a flash setting. I’m not sure if you’ll need to attract attention in emergency ‘fix-it’ situation though. Includes seven double-sided wrenches from 3/8" (10mm) to 3/4" (20mm). Recharging dock stands upright on a workbench or hangs on a shop wall. 10" H x 8" W x 2" D. (4 lbs.) Was $129.95 at Hammacher, now $29.95, plus S&H. With tax and shipping, I paid about $40. With the freezing weather in NYC, I haven’t tried these yet, but should be good for boat projects. They are also available at Amazon for about the same price.

 http://www.hammacher.com/Product/Default.aspx?sku=81281 

Amazon link: Bossco 0208 Hi Beam 1st Ever Light Wrenches

Here’s a video from the company:http://www.youtube.com/watch?v=IP55taiweYs