The most suitable business for students on campus is clothes selling business. These days clothes like vintage are in vogue right now among student so if a student can start selling those kind of clothes on campus he is sure to make a lot of profit because students loves dressing well. During my time in the School I also sold clothes and I can tell you that it's a very nice experience as I got to sell clothes to so many students and also in the process found so many friends amongst my customers.