Of course, you'd need expertise in a particular subject to teach it, but demand for knowledge goes beyond what you might think of as standard academic curriculum. For instance, Outschool, a marketplace for online classes, offers a platform for teachers to share their knowledge and talents in a wide range of activities, such as shoe tying, French braiding and creating a Dungeons and Dragons character. You can even host your own show-and-tell or storytime session.
If you have experience and knowledge in a specific area, then consider sharing it with others. For example, if you’re an accountant or lawyer, then you can provide advice to small businesses for a pretty penny. You could also consult businesses on how to use a new software program or how to become more environmentally friendly. (If you're interested, my company offers a consulting guide to get started.)
Believe it or not, you don’t have to be a CPA to start bookkeeping. Just sign up for a bookkeeping course at a community college or even online (such as this course from The Accounting Coach). Once you complete a course, you can start earning, and the median salary is reportedly $34,000. (Some stay-at-home bookkeepers I've spoken with personally make more than $70,000.) Work From Home