First, instant noodles
Instant noodles are a must-have for otaku. Moreover, instant noodles are also very practical foods that are inconvenient to eat during the trip. You will see this when you take a long-distance train. Many people are eating instant noodles. Because instant noodles are easy to store and very convenient to make. Just some hot water is enough. If you don't go out for a day and stay in the dormitory, you can buy instant noodles in the dormitory. If you are hungry, soak them in hot water.
But if I suggest, I'd better buy instant noodles in bags. Bags and barrels, noodles and seasonings are the same. But the barreled ones are much more expensive, just because there are boxes and forks. So you can buy a box lunch in the dormitory, then buy bagged instant noodles and wash them after eating. I may get tired of eating instant noodles if I eat too much, so I recommend it here. It's best to buy some sausages or eggs, which will be much more delicious in instant noodles, and there is a sense of freshness in it. You will find that not only instant noodles are expected, but others are more delicious.
Second, bread.
Bread is also a kind of hungry food. If you don't go out 1 day, then it can be used as food for cooking. In class in the morning. If you are going to be late, you will go to the supermarket to buy bread to eat in class. Very convenient. Sometimes in the dormitory, if you don't want to go out, you will reserve some bread in the dormitory. And there are many kinds of bread and many tastes. You can eat other flavors of bread when you are tired. It is suggested that you drink a bottle of milk or a drink while eating bread. This way, eating bread will not be particularly dry and will be full. These are my long-term experience of living on campus.
Third, cookies
Cookies can also be kept for a long time and can be eaten as meals. When I say cookies here, I don't just mean those cookies like three plus two and Oreo, but also some cookies like Shaqima. This kind can be kept in the dormitory for a long time. If you don't want to go out, you can eat when you are hungry. Very convenient. Similarly, when you are eating cookies, you'd better buy some drinks or milk to drink. Because most cookies are still very dry, and then have something to drink. It will taste better and be full more easily.
Finally, these foods are short-term foods eaten in the dormitory. You can't stay out of the dormitory for a long time and then eat them as meals. So for your health, you'd better eat more healthy food and do more exercise outside.