Check out this cool lamp from designer Karin Johansson, the Dynamic Lamp.

The Dynamic Lamp features a large globe that can be spun around by your hands, inside the globe is a dynamo which converts the kinetic energy into electricity and the light the lamp.

Whilst this is a great concept,  I cant see it being very practical as you would spend the majority of your time spinning the globe rather than reading your book as the picture above.

Gizmo Diva via Coolest Gadgets