1. Looking for a part-time job: Summer is the golden age of part-time. You can find a part-time job in the surrounding business districts, restaurants, supermarkets, scenic spots and other places, such as waiters, salesmen, tour guides and so on.

2. Internship: You can use the summer vacation to find some internship opportunities related to your major, gain practical experience and improve your professional skills. Sometimes internships will be paid.

3. Teaching guidance: If you are good at a certain subject or have special skills, you can consider giving guidance, consulting or training during the summer vacation. You can find students through some intermediary platforms or by advertising yourself.

4. Summer course teaching assistants: Some schools or institutions will hold various courses in the summer, and they can become teaching assistants to assist teachers with course assistance and enjoy certain remuneration.

5. Participate in social practice projects: Some organizations or social groups will organize some volunteer activities or social practice projects, and you can choose to participate in some of them, which can not only accumulate experience, but also contribute to society.

6. Start your own business: If you have the intention and idea of starting your own business, you can use the summer vacation to start your own business and carry out some small businesses or projects, such as opening an online shop, selling second-hand goods on behalf of others, and undertaking design and production.

When choosing and doing any kind of work, you should ensure your own safety and health, abide by relevant laws and regulations, arrange your own time reasonably, and ensure that your summer study or other important activities will not be affected.