Campbell Hausfeld - 12-Volt Inflator & Safety Light
Stuff this one into your trunk in case of an emergency or use it to fill up the kids toys. If you're tire starts running flat, simply plug it into your cigarette lighter, and it will fill 'er up! As an added bonus, it includes a built-in tire gauge to make sure your tires are properly inflated. And finally, it also includes a safety light with just enough light to help you change a tire in the middle of the night.