Find cheap(er) gas
While prices vary from place to place, we can probably all agree that we pay too much for gas. If you work at home, that's not such a big deal, but if you live in the outer suburbs or a rural area and have a long commute into work, that can eat up a sizable chunk of your disposable income. You could drive around looking for the cheapest gas in town, but that burns up what you've already got, so that's probably not your best bet. Turns out you can get a good idea of what's going on, price-wise, in your neighborhood.
GasBuddy.com is a fuel price search engine. Go to their site with your web browser, enter your city and state or a ZIP code, and they'll report back what they know about gas prices in your neighborhood. And if you're out and about, they've got mobile versions as well at GasBuddyToGo, or you can send an SMS text message to 368266 with the text "gasbuddy" and your city and state or ZIP code (like gasbuddy 90001). They'll send you back a list of prices in your area, so you'll save a few bucks when it's time to fill up.