This is an interesting hack that uses a disposable camera to make a 4-Watt Fluorescent light power supply. The light is powered using a 1.5 volt battery and the flash circuit from the camera. I wonder how long the light will last? Read all about making your own 4-Watt fluorescent light.
http://blog.makezine.com/archive/2008/03/diy_4watt_fluorescent_lig.html