building a bike powered phone charger

Here are some links I'm looking at and trying to decide which one to try out first.

http://greenopolis.com/goblog/derekmarkham/7-great-pedal-power-plans

http://www.stewardwood.org/resources/DIYcyclepower.htm

http://blog.makezine.com/archive/2009/06/how-to_pedal-powered_phone_charger.html

http://www.instructables.com/id/Bike-that-charges-your-cell-phone-as-you-ride/

Excerise

One of my (ongoing) goals is fitness. But is like so many goals that
gets pushed to the end of the list, and simply missed in the craziness
of life. Well, the move to Kampot is facilitating excercise - somewhat.