Complete market surveys in your spare time
What you can make: Varies, depending on which surveys you qualify for
Will you make a living taking surveys online? No, unless the living itself will be done in your parents' basement. That said, clicking a few boxes to let market researchers know you're totally happy with your cable provider is an easy way to make extra bucks on the side. Popular spots for this type of gig include Swagbucks, Mechanical Turk, and Opinion Outpost, though new ones are constantly hitting the web.
Take on simple side jobs
What you can make: Between $5 to $30 per hour
If you can't even waste time in front of the TV without your laptop in front of you, there's easy money to be made. Clickworker crowdsources small Internet jobs, like research and writing, for its clients, offering up tasks to users who qualify. Just sign up, take the assessment tests, then check back for jobs whenever you have free time. You won't make Walter White money this way, but you can do it while binge-watching Breaking Bad for the fourth time. Particularly focused users report making up to $30 per hour on occasion.