If I read it right you're looking for a Phone holder, you could get a set of magnets for cheap, they won't damage your device and you could stick it on glass and stick the other magnet on the back of your phone and everytime you get in the car, put it on your window, in charging terms, you could get a car charger usb adapter and those long iPhone 1m/2m usb wires and plug it into your device and if you'd like to listen to music you could buy a 1m/2m AUX cable if your car has the plug slot.
Thanks,
ASSASINATERZ