The $40 that I paid for the radioshack inverter to convert 12V car DC upto 155v of AC power is well worth it. It goes into the car cigarette lighter outlet and I don't have to worry about carrying a car charger for any of my devices. ipod, cell phone, laptop, camcorder etc. There are different variants which give out different watts of power (70, 120, 140, 150, 300 etc). I think a 9' TV needs 300w of power. 150w should be good enough for eveything else except TV. The only thing that I noticed is a hissing noise (because of interference I guess?) when trying to transmit ipod songs on to the car stereo while charging.
Radioshack inverter