Stock dividends: Some stocks, especially stocks from big corporate standouts, pay dividends to shareholders based on the number of shares they own, and the percentage of the stock price on the dividend date. For example, if a company pays out 3% on a stock that's trading at $100 per share, you'll earn $3 for every share of that stock you own. Add it up and that can be good take-home pay as a passive investment.
Sam…just read this article and I want to say that this is the best posting on passive income I have ever read…in a blog, article, or book. Thanks for making a difference and being an inspiration as to how it can all be accomplished. One of the great benefits of the internet is that people are willing to share their stories and experiences with each other online. If we had this when I was working professionally (20-40 years ago), it would have saved me from making some rather poor financial decisions that affected my retirement income. In a way, the internet is making up for the loss of financial security in the loss of The Defined Benefit Plan for retirement. Bravo!
India has a fast-growing medical tourism sector of its health care economy, offering low-cost health services and long-term care.[256][257] In October 2015, the medical tourism sector was estimated to be worth US$3 billion. It is projected to grow to $7–8 billion by 2020.[258] In 2014, 184,298 foreign patients traveled to India to seek medical treatment.[259]

That’s a nice read! I love your many tangible ways mentioned to make passive income unlike certain people trying to recruit others by mentioning network marketing and trying to get them to join up and sell products like Amway, Avon, Mary Kay, Cutco or 5Linx. People get sucked into wealth and profits and become influenced joiners from the use pressure tactics.
The five-year plans, especially in the pre-liberalisation era, attempted to reduce regional disparities by encouraging industrial development in the interior regions and distributing industries across states. The results have been discouraging as these measures increased inefficiency and hampered effective industrial growth.[397] The more advanced states have been better placed to benefit from liberalisation, with well-developed infrastructure and an educated and skilled workforce, which attract the manufacturing and service sectors. Governments of less-advanced states have tried to reduce disparities by offering tax holidays and cheap land, and focused on sectors like tourism which can develop faster than other sectors.[398][399] India's income Gini coefficient is 33.9, according to the United Nations Development Program (UNDP), indicating overall income distribution to be more uniform than East Asia, Latin America and Africa.[10]

Nobody gets early FI investing in bonds, CD’s, or even stocks unless they make a huge income or are extremely frugal or a combination of both. Paper assets just don’t provide enough returns. Business income can be great but it is typically not as semi-passive as I would like and there is a relatively high failure rate. That is if you can monetize an ideal to begin with. RE investing needs to be higher ranked IMO as a way that the “average guy” can become FI.
For a person working for a wage, their source of income is their job, or their labor (aka their time that they sell to someone). But you can own a house, and rent it out, and when your renters pay you renter every month, the source of that income check is your rental property, or your house. It would just be called rental income. If you have money in the bank in an account that pays interest, those interest payments are another source of income. We can say the source is interest payments, or we can identify the asset that is generating rent, and say your money in the bank that is generating “rent” (aka interest) is your source of income.