Take Surveys and Watch Ads
"Check out our friends at /r/beermoney. You can earn anywhere from a $40 to $300 a month. Basically they have found the best websites to use for filling out surveys and watching ads, and then you give your response to it. Or the easier way is that they have found websites that will monitor your bandwidth usage and give you money based on that. It's worth a shot to look at it if you're on a computer a lot!"