FlyLight USB 2.0 Notebook Light
By Kensington

Lighten computer work with an illuminating performance. Put computer work in a better light with the FlyLight 2.0. Eight ultra-bright LEDs are mounted atop a flexible gooseneck that's easy to position. And with a built-in dimmer control, it is also easier to control brightness. The energy-efficient LEDs draw minimal power and last up to 100,000 hours of continuous use. ... 

16 inch USB Laptop Light Cable
By C2G

Don't be left in the dark! The USB Notebook Light from Cables To Go ensures you have light to do your computing when you need it most. Use it on the plane, during a dimly lit presentation, or in bed. Great for travelers and students alike, this featherweight light illuminates your keyboard without distracting others around you. ...