http://www.designfax.net/cms/dfx/opens/article-view-dfx.php?nid=4&bid=315&et=featurearticle&pn=03

A University of Texas (UT) Arlington research associate and electrical
engineering professor have designed a micro-windmill that generates wind energy
and may become an innovative solution to cell phone batteries constantly in need
of recharging and home energy generation where large windmills are not
preferred.

Smitha Rao and J.-C. Chiao designed and built the device that is about 1.8 mm at
its widest point. A single grain of rice could hold about 10 of these tiny
windmills. Hundreds of the windmills could be embedded in a sleeve for a cell
phone. Wind, created by waving the cell phone in air or holding it up to an open
window on a windy day, would generate the electricity that could be collected by
the cell phone's battery.

Put them on your leading edge. Thanks to the Mad Scientist.