Here are some popular ways to earn passive income:

1. Rental Properties: Invest in real estate properties and generate rental income. You can rent out residential or commercial properties to tenants.

2. Dividend Stocks: Invest in dividend-paying stocks. As a shareholder, you can earn regular dividend payments without actively participating in the company's operations.

3. Peer-to-Peer Lending: Join a peer-to-peer lending platform where you can lend money to individuals or small businesses. You earn interest on your loans, generating passive income.

4. High-Yield Savings Accounts: Open a high-yield savings account that offers competitive interest rates. Your money will grow over time with minimal effort.

5. Royalties: If you have creative talents, consider creating and selling intellectual property such as music, books, photographs, or artwork. You can earn royalties whenever your work is used or sold.

6. Create an Online Course: Share your expertise by creating and selling online courses. Platforms like Udemy and Coursera allow you to generate passive income from course sales.

7. Affiliate Marketing: Promote products or services through affiliate marketing programs. When someone makes a purchase through your unique affiliate link, you earn a commission.

8. Robo-Advisors: Use robo-advisory services that automatically invest your money based on your risk tolerance and investment goals. They can help grow your wealth over time.

9. Peer-to-Peer Rental Platforms: If you have assets like a car, camera, or equipment that you don't use regularly, consider renting them out on platforms like Airbnb, Turo, or Fat Llama.

10. High-Dividend ETFs: Invest in exchange-traded funds (ETFs) that focus on high-dividend stocks. This allows you to diversify your investment while earning passive income.

Remember, while these methods have the potential to generate passive income, it's important to conduct thorough research, assess the risks involved, and consider seeking advice from a financial professional before making any investment decisions.