Work Of course, you can always earn money by working. But it can also be a rewarding job, as you get to see students grow and thrive as they find their place in the campus community. Post an ad on Craigslist, Facebook Marketplace, or even just around town. These are all ways to save money on subscription services. So whether you need to stay on campus or have the ability to travel a bit for work, there are plenty of easy options to earn extra money in college. The best way to find clients, particularly those who pay a decent amount, is to approach those clients and websites directly. Do you enjoy writing?