If you have an empty house or room you can rent it out on AIRBNB and OYO Rooms. Many travelers are looking to spend one night at a place. You can always rent out your empty house or room to them. All you need to do is list your room or house online, explain the rules and you are good to go. Travelers will pay you online. This way you don’t have to search for clients. They will come to you.
Investing in bonds: Similarly, bonds are an attractive way to engage in passive income. Over a recent 45-year period, bonds funds, as measured by Vanguard Funds, returned 7.1%. Of course, there's no guarantee that investments in stocks or bonds will always work out well, investing in them is by far the surest way to generate money through passive income.

India's retail industry mostly consists of local mom-and-pop stores, owner-manned shops and street vendors. Retail supermarkets are expanding, with a market share of 4% in 2008.[247] In 2012, the government permitted 51% FDI in multi-brand retail and 100% FDI in single-brand retail. However, a lack of back-end warehouse infrastructure and state-level permits and red tape continue to limit growth of organised retail.[248] Compliance with over thirty regulations such as "signboard licences" and "anti-hoarding measures" must be made before a store can open for business. There are taxes for moving goods from state to state, and even within states.[247] According to The Wall Street Journal, the lack of infrastructure and efficient retail networks cause a third of India's agriculture produce to be lost from spoilage.[249]
Most of us think of investment income as just the cash flow we get from bank interest, bonds, share dividends and property rents, some of which comes via a super pension.  But a more complete view is to also consider how growing the value of your investments can add to your spending potential.  This total return approach generates income from both income and growth to optimise spending from your portfolio across all market cycles, aligning cheap and expensive investments to your goals.