Meritline offers the Dual USB Car Charger Adapter for $2.99. Apply coupon code "MLCK117TNL1" to drop it to $1.09. With free shipping, that's pennies under our July mention and the lowest total price we've seen for such a device in white. (We mentioned one in black for a few cents less last month, since expired.) This adapter allows you to use your existing USB cable to charge two devices from your car's DC power outlet.