I had seen a few adapters that convert the car lighter into a powered USB port but they were all ugly looking or too bulky. Then I read about the Belkin Micro USB adapter on Gizmodo and decided to order one from Amazon.
Because its tiny it fits perfectly into the car lighter without sticking out so it actually gives the impression that it came built in from the factory. I am currently using it to charge my iPhone and BlackBerry but you could use it to charge other devices. Very practical.
It costs KD5.750 and comes with an iPhone cable. [Amazon Link]
Update: Changed picture to a better one
Update2: According to a reader its available at Alghanim X-cite for KD8