You sign up to be an independent contractor and go around to local businesses to collect a photo and business information for Google Maps. You basically sign up a business to be on Google Maps at no cost to them. You just upload the information to Google. After the business verifies that the information is correct, you make $10. You can do as few or as many as you like on your own time.
I think it would be a great and easy way to make some extra money, and your family could even make a day out of going to the strip mall and walking around while you take pictures. :) Check out Local Business Referrals and more frugal money saving (and making!) tips at Biblical Womanhood.