Building passive income doesn’t always require big capital. With the right ideas, you can start small and grow steadily over time. First, investing in dividend-paying stocks or mutual funds allows you to earn regular income with minimal effort once invested. Second, starting a print-on-demand or digital product business requires low upfront cost and can generate recurring sales. Third, peer-to-peer lending platforms help you earn interest by lending small amounts online. Fourth, creating a YouTube channel or blog can generate ad and affiliate income over time. Finally, investing in REITs offers real estate exposure without buying property, making it affordable and beginner-friendly.