GoldenGadgets is offering an Emergency AA Phone Charger for $3.99 plus $1.85 for shipping. From the website:
Mobile Phone Emergency Charger AA
Use 1 x AA battery to charge your cell phone.
Includes 4 - power connector intended for Nokia, Motorola, Samsung, Sony Ericcson, and Blackberry.
Input Voltage: 1.2V - 1.5V
Output Voltage: 5.7V +- 5%
Product Size: 1.8 x 7.1 cm
Net Weight: 20 grams
Charging Current: 400mA
Charging time: approx. 1-3 hours
Talk Time: up to 2 hours.
Standby Time: 24-30 hours
Typical Efficiency: 88% - 93%