21 high-paying side jobs you can do in your spare time

Trying to make some extra cash? Have free time you don't know what to do with? Trying to develop or hone a new skill? You should consider getting a side gig.

FlexJobs, an online service specializing in telecommuting and remote work, recently put together a list of 21 high-paying jobs you can do on the side. To qualify for the list, each job had to be considered "flexible" (and not full time), and had to pay at least double the federal minimum wage of $7.25 an hour, according to the job posting on FlexJobs and data from PayScale.

Brie Reynolds, the director of online content for FlexJobs, says "side jobs" are defined as anything part time, including freelance, temporary, short- or long-term, work-from-home, or in-person flexible gigs.

Here's FlexJobs' list of high-paying side jobs you might want to consider: