EverydaySource has Micro USB Cell Phone Car Charger: http://www.everydaysource.com/product/car-charger-micro-usb-for
for $4.99.Coupon code "S0519PHJL" bring it down to 99 cents. Free Shipping
This is compatible with the Amazon Kindle 2, Blackberry Curve, LG, and many
other branded phones and devices.