So many students come to college with a history of experiences and talents that have very little to do with their career goals or majors. Students who are musicians can make money playing for school events, local churches, or other social events. Students who have cars can become shoppers for others (especially the elderly). Are you good at a particular subject? Why not become a tutor? Can you draw or paint? Are you skilled at cooking? The bottom line is use your strengths and skills to make money. It comes down to marketing and hustle.
When I was an undergraduate student, I worked a part-time job, but I would also make signs to post on bulletin boards when I wanted to sell my books. I would leave my name and number and sold books to other students for a reasonable, yet cheaper price than what they would pay elsewhere. Sometimes, people don’t know what you do, or who you are, because you have not made yourself visible. Be mindful of rules regarding solicitation on and around campuses, and/or that you aren’t doing anything illegal. Market yourself, and maybe it can turn into a stream of income throughout college and into your post college years.