It depends on your city, your school, different cities and different schools. According to your height, you will have different resources. If you are committed to being a teacher in the future, you can be a tutor or a part-time job in the summer vacation. If you are committed to being a translator in the future, you can do some part-time jobs as an English translator in the summer vacation. If you devote yourself to interpreting in the future, you can find some corresponding part-time jobs in the summer vacation. In short, it depends on your major and your development direction.