this inverter turned my Prius into a sort of mini generator. It was able to power lamps, and more importantly, charge up my computer and phone. The phone I used as a wifi hotspot to get my computer online, which allowed me to stay up to date about weather conditions and outage forecasts, plus the ability to keep working from my home office.
(I normally use this device to keep my phone charged when I drive to locations using the phone google Maps to navigate).
If you ever want to turn your Prius into a mini generator, have an inverter like this one handy. Turn the Prius on, but only after you put it outside or at least hang its butt out the open garage door, because the car needs to run about 10 minutes out of every hour to keep itself charged up.
Run an extension cord out the cracked window and under your front door and into your office (or wherever). Voila! You've got a bit of power. Though word to the wise: if you try to power something that requires too much, it won't work. Stick with lamps and charging personal electronics.