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.
The social media fan base is an asset for such people, most of them are in the entertainment domain. People related to fashion and entertainment domain can monetize their Instagram page. You can check the fan base of BhakSala, Gabbar Singh and StoryPick, and you can imagine how valuable those can be for any company who want to advertise on such pages.
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.