if you are a computer science student i believe you have a bit knowledge about computers so,you can do Graphics designs there are vast amount of tut videos once you become good at it go and show your work to local hitmet betoch they might buy your work .or build websites and sell them. if you are in a rural area demo do a research on how how you can help your people with the knowledge you have and make money out of it at the same time.much love from Ethiopia ❤️