Did you major in a subject like English, history, or math in college, or do exceptionally well on the SAT exam? Do you have patience with children? If so, you likely have what you need to tutor kids in particular subjects. Seek out parents or teachers and let them know that you tutor students in a certain subject, and offer materials for them to share, and phone calls will often trickle in. You can get going locally or expand across the country by offering to tutor online.
I recently stumbled on this, and it’s very interesting. On websites like Amazon, and Flipkart there is an option which allows users to ask questions. I have noticed that people who have not bought the product also answer it. Apart from this, even if you haven’t bought a product, you can review them if you have personally used it. This opens a new market for those who can participate in this activity. Companies would usually send them the product; they can try it for some time and then share their review.
Watch for emails asking for note-takers. Once a fellow students' needs are documented, disability services will contact the professors and ask for volunteers in the class to take notes, and your professor will in turn email the class. You can also upload your notes to a platform like Stuvia, where you can earn money by selling your notes to other classmates.