P2P lending is a legal business recognised by RBI: P2P lending platforms are legal and the RBI has categorised them as NBFC-P2P through a notification in August 2017. In October 2017, the RBI issued regulations for P2P lending. All P2P platforms are regulated by the RBI just like banks and NBFCs. So lending through P2P platforms is a legal business.
India's mineral resources are vast.[274] However, its mining industry has declined – contributing 2.3% of its GDP in 2010 compared to 3% in 2000, and employed 2.9 million people – a decreasing percentage of its total labour. India is a net importer of many minerals including coal. India's mining sector decline is because of complex permit, regulatory and administrative procedures, inadequate infrastructure, shortage of capital resources, and slow adoption of environmentally sustainable technologies.[270][275]
Investing in a business: Another good way to generate passive income is to invest in a business --even a small one -- in return for a percentage of the profits - just like Shark Tank, only smaller. Lending $10,000 to a local business that, for example, is working on a mobile app for Apple phones could lead to a passive income-generated share of the profits when that mobile app starts selling like hot cakes.
I’ve never invested in real estate (except to live in), but am always intrigued by communities like FS who seem to have such a passion for it. My intrigue stems back to my earlier comments that the long term trends in appreciation in real estate are simply not very competitive versus equities, despite what Robert Kiyosaki had to say in his book, Rich Dad, Poor Dad.

I just started out with Affiliate Marketing (idea # 8) and it is not as easy as people make out to be. For me the hardest part so far is learning Search Engine Optimization (SEO) and driving traffic to my website. I m only 3 months into it, but I am confident that the site will begin to generate some income, I have give it 6-9 months, so we’ll see.
If you watched the video, he goes into a discussion about shocks (about 8 minutes in) like bad investments but how they don't really matter as much if r (rate of return) is greater than g, the rate of economic growth. If r = 5% and g = 1%, then you can lose 80% (the difference) and still be ahead because the return on the remaining 20% has paced with economic growth.

And real estate does more than just track inflation – it throws off income (which is important to some people and useful to most). And while your underlying asset is appreciating, the income also grows as rents increase over time. And if you make smart and well-timed purchases, both rents and asset values can increase at well above the rate of inflation.

In the runup to the Second World War, the United States had suffered through the Great Depression following the Wall Street Crash of 1929. Roosevelt's election at the end of 1932 was based on a commitment to reform the economy and society through a "New Deal" program. The first indication of a commitment to government guarantees of social and economic rights came in an address to the Commonwealth Club on September 23, 1932 during his campaign. The speech was written with Adolf A. Berle, a professor of corporate law at Columbia University. A key passage read:
Investing in rental properties: Another form of real estate investment, rental investments (i.e. becoming a landlord) could steer you down the passive income path of steady monthly rent checks that you can use to pay off a mortgage loan on the rental property. After the mortgage is paid off, those monthly checks go right into your bank account -- potentially for years to come. 
I also noticed that in your passive income chart at the bottom that you don’t include your internet income other than sales from your book. Is there a reason for that? Do you not consider is passive because you are actively blogging all the time to create it? Or do you just not want readers to know how much money you generate from blogging activities?

Attributable to compensation for services performed in Connecticut or income from a business, trade, profession, or occupation carried on in Connecticut (including income derived directly or indirectly by athletes, entertainers, or performing artists from closed-circuit and cable television transmissions of irregularly scheduled events if such transmissions are received or exhibited within Connecticut);

You can select any of the above fields based on your skill sets to create second income source. There is no dearth of opportunities, only thing matter is to identify the right one, which suits you. There is no shortcut to success but you have to start journey from some point. Recession can push your career 5 years back but with proper planning you can minimize its impact and remember Bad Times also don’t last forever.
Civil aviation in India traces its beginnings to 18 February 1911, when Henri Pequet, a French aviator, carried 6,500 pieces of mail on a Humber biplane from Allahabad to Naini.[197] Later on 15 October 1932, J.R.D. Tata flew a consignment of mail from Karachi to Juhu Airport. His airline later became Air India and was the first Asian airline to cross the Atlantic Ocean as well as first Asian airline to fly jets.[198]
There are many success stories you’ll run into of what it takes to generate multiple streams of income. However, one of the most important tips is to take on multiple clients. One client being your income source is bad news. They could voluntarily or involuntarily leave you high and dry. For instance, their business may begin to suffer and they no longer have the funds to pay you. Well, that is your income stream; gone without warning.
Since 2000, Indian companies have expanded overseas, investing FDI and creating jobs outside India. From 2006 to 2010, FDI by Indian companies outside India amounted to 1.34 per cent of its GDP.[311] Indian companies have deployed FDI and started operations in the United States,[312] Europe and Africa.[313] The Indian company Tata is the United Kingdom's largest manufacturer and private-sector employer.[314][315]
Stocks (shares) paying dividends are typically a reliable source of income but they have higher risk of capital losses than cash and bonds. So, it’s wise not to chase yield indiscriminately.  The 10 highest yielding stocks on the ASX 200 (the 200 largest companies in Australia) are shown in the table below.  But their share price performance on average over the last year has been underwhelming, as shown in the far right column: