Team up **any** portable device, such as a COWON PMP, with one of these...

http://www.coolest-gadgets.com/20060807/phone-and-usb-solar-charger/

http://www.proporta.com/F02/PPF02P05.php?t_id=1520&t_mode=des

http://www.stuff.co.nz/4362448a24520.html

Paris - because the sun shines out of her a***...