As for what to do, it depends on what you are good at. Choose some high school students, middle school students, or tutor some students at the same level and get corresponding remuneration. If you are good at foreign languages, you can choose to do this. Not only can you exercise your foreign language level, but you will also feel happy and enriched when teaching others.
Besides, you can also learn some knowledge in your spare time. It is also a wrong choice to learn tea ceremony and chess in middle school, which can make you feel the joy of life and be of great help to our physical and mental health. If you are a female college student, you can also learn to dance, so that you can have a good figure and temperament, which is helpful for your future graduation work.