1. Education and Training: You can work part-time in a training institution or tutor platform, or you can offer your own education and training courses online.
2. Writing and translation: You can try to do sideline work in writing and translation, such as self-media platforms, website articles and academic papers.
3. Photography and design: You can use your own photography and design skills to do sideline business, such as opening a photography studio, graphic design, web design and so on.