Specialize in writing automated tests for software to ensure quality assurance. Use tools like Selenium, JUnit, or pytest to create robust testing environments. Offer your services to software development companies looking to streamline their testing processes.

Create technical documentation, user guides, and manuals for software products. Offer your writing services to companies, startups, or individuals. Proper documentation is a valuable asset for any software product.

Dive into blockchain technologies and offer your expertise to startups and companies interested in implementing blockchain solutions. Develop smart contracts, decentralized applications (DApps), and more.

Automate tasks for companies or individual clients using scripting languages like Python. Specialize in creating scripts for repetitive tasks, data scraping, or workflow optimization.

Use your data analysis skills to help businesses make informed decisions. Offer services in data cleaning, visualization, and interpretation using tools like Excel, R, or Python's Pandas library. Market your services to startups or small businesses.

Learn about and offer cloud-based solutions such as AWS or Azure implementations. Help businesses to migrate to the cloud, manage cloud resources, and optimize performance. This is a growing field with high demand for expertise.

Offer technical support services to small businesses or individual clients. Provide assistance with hardware, software, or network issues. Promote your services locally or via online marketplaces.

Develop and sell your own video games. Use game development engines like Unity or Unreal Engine. Publish games on platforms such as Steam, itch.io, or the Apple App Store and Google Play Store.

Contribute to open-source projects to improve your skills and gain experience. Projects like these could potentially lead to job offers, internships, and networking opportunities that can be very beneficial for your career.

Leverage skills in graphic design software like Adobe Photoshop or Illustrator. Offer design services for logos, banners, social media graphics, and more. Promote your services on freelance platforms or through your own portfolio website.

Offer cybersecurity consulting services to small businesses and individuals. Help them secure their networks, perform vulnerability assessments, and provide recommendations for improving their security posture.

Start a blog, YouTube channel, or podcast related to computer science topics. Share knowledge on programming languages, software engineering, technologies, and more. Monetize your content with ads, sponsorships, or by offering paid courses.

Tutor other students or individuals in computer science-related subjects such as programming, algorithms, data structures, and more. Use online platforms such as Tutor.com, Chegg Tutors, or Wyzant to find students in need.

Design and develop mobile apps for clients or your own projects. Use frameworks such as React Native or Flutter to create cross-platform apps efficiently. Offer your services online or publish your own app on platforms like the App Store and Google Play Store.

Offer services to create websites for clients, including front-end development with HTML, CSS, JavaScript, and back-end development with languages like PHP, Python, or Node.js. Market your services on platforms like Upwork, Fiverr, or Freelancer.