Offer your skills and services as a freelancer. This can include writing, graphic design, programming, marketing, and more. Platforms like Upwork, Fiverr, and Freelancer connect freelancers with clients seeking specific skills.
Participate in online surveys or write reviews for products and services. Websites like Swagbucks, Survey Junkie, and Vindale Research reward users for providing feedback.
If you have crafting skills, consider selling handmade goods on platforms like Etsy. You can also sell vintage items or unique finds on platforms like eBay.
If you have extra space, consider renting it out on platforms like Airbnb. This could be a spare room, a vacation home, or even a parking space.
Invest your money in stocks, bonds, real estate, or other investment vehicles. While it involves some risk, investing can provide returns over time.