Make extra income website?

Hey everybody.
I'm currently a college student and have a marketing internship position at a tech company. But recently the cost of living has gone out of control for me and my "salary" couldn't make up for it. I'm also working another job at a cafe to earn extra money too but it still not enough. I'm planning to earn some more money in the free time. Can you please suggest me some money making websites? Thank you.