Many developers need feedback on their new applications before they launch. Sign up for platforms like UserTesting to get paid for testing apps and providing feedback. This usually requires no investment other than a device to test on.

If you are proficient in a second language, offer translation services for documents, websites, or even tutoring lessons. Start with smaller tasks and build a reputation through websites like ProZ or TranslatorsCafe.

Provide administrative support to busy professionals from the comfort of your home. Tasks might include scheduling, email management, and data entry. Websites like Belay and Zirtual can connect you with clients.

Develop and sell online courses in areas you are knowledgeable about. Platforms like Teachable and Udemy allow you to create and sell courses without upfront costs. Promote your courses through social media and your network.

If you have skills in graphic design, offer those services to businesses, students, or individuals. Create logos, social media graphics, and marketing materials. Free tools like Canva or GIMP can be your starting point.

Create a podcast around a niche topic that interests you and appeals to a specific audience. Use free podcast hosting platforms like Anchor to get started. Over time, build an audience and monetize through sponsorships and listener donations.

Start a blog or YouTube channel about a topic you are passionate about. Once you build a following, you can monetize through advertisements, sponsored posts, and affiliate marketing. Initially, this requires only time and creativity.

Many small businesses need help managing their social media accounts. Use your knowledge of platforms like Instagram, Facebook, and Twitter to offer management services. You can start by helping local businesses or acquaintances for free and then use those experiences as references.

If you excel in a particular subject, offer your expertise as a tutor. You can tutor fellow students, high schoolers, or even younger kids. Use free platforms like Zoom for virtual sessions and create flyers or posts on social media to attract clients.

Utilize your writing skills to write articles, blog posts, or copywriting for clients online. Platforms like Upwork and Fiverr allow you to create a profile and showcase your portfolio. No investment is required other than your time and dedication to honing your writing abilities.