Buy a printer to help people print data: only dozens of small printers and A4 paper are needed. You can print the study materials without leaving the dormitory. This kind of business is generally good. The price is subject to the school price. If campus printing is far from your dormitory, it may be a little more expensive. After all, it is more convenient for you to be here. If the school printed matter is near your dormitory, the price is the same as his. After all, no one is closer than you. Distance advantage is also profitable.

Resale unused items: University dormitories often hoard items or buy things that are not used or not used at all several times. It's a pity to lose them. It can be sold to roommates or classmates at a discount, which can not only make use of waste, but also make money.