I am making money from multiple sources for five years now, and I’m continually on the lookout for more and more. I own few businesses, but things were not easy on this path. For establishing a business or even thinking of the same one needs to be financially ready. For this you can refer to a section: How to be financially ready to start a business? But somehow you realize that you do not have enough money to start the big business you are thinking about, here are few ideas as to how you can start some low investment businesses: Special 21 small business ideas with low investments

The coolest part for me is a little part called Taxbot. It’s a cloud on the site that tracks all of my business expenses and you can download that to your phone, take a picture of your receipt and toss it. It also will track your mileage via GPS for you, when you need to. This has saved me so much time, and I feel so much more organized. You wouldn’t believe what I deal with during the Tax Season. Boxes and boxes of receipts, trying to piece it all together.
Child labour in India is a complex problem that is rooted in poverty. Since the 1990s, the government has implemented a variety of programs to eliminate child labour. These have included setting up schools, launching free school lunch programs, creating special investigation cells, etc.[360][361] Author Sonalde Desai stated that recent studies on child labour in India have found some pockets of industries in which children are employed, but overall, relatively few Indian children are employed. Child labour below the age of 10 is now rare. In the 10–14 age group, the latest surveys find only 2% of children working for wage, while another 9% work within their home or rural farms assisting their parents in times of high work demand such as sowing and harvesting of crops.[362]

I just can’t seem to get my head around creating my own online product. When you talk about it, you make it sound like its mostly just about putting in the time and plugging away at it. Problem is I can never seem to come up with any ideas for a site or product that seem remotely unique or compelling or that I have any special knowledge about. The stuff I do know about is pretty commodity type knowledge that can mostly be found on thousands of sites on the internet already. Any tips on discovering what your “unique angle” is? I mean, you have a pretty compelling and somewhat unique personal story of working on wall street and then walking away at a young age.
From the beginning of the 19th century, the British East India Company's gradual expansion and consolidation of power brought a major change in taxation and agricultural policies, which tended to promote commercialisation of agriculture with a focus on trade, resulting in decreased production of food crops, mass impoverishment and destitution of farmers, and in the short term, led to numerous famines.[93] The economic policies of the British Raj caused a severe decline in the handicrafts and handloom sectors, due to reduced demand and dipping employment.[94] After the removal of international restrictions by the Charter of 1813, Indian trade expanded substantially with steady growth.[95] The result was a significant transfer of capital from India to England, which, due to the colonial policies of the British, led to a massive drain of revenue rather than any systematic effort at modernisation of the domestic economy.[96]
If you are unfortunate enough to find yourself no longer able to physically work in your chosen position, developing a skill set that will allow for a complete career change is a must. The passive income route as a second career is a great backup allowing you to hire out what you can’t physically do. Early on in my career I found I was unable to physically tolerate exposure to tobacco smoke. At that time, smoking was allowed in all offices, restaurants, etc. I was blindsided; who ever thought? It virtually removed me from most positions I had schooling for. As luck would have it, I had purchased a duplex while working and saved a small sum. When I had to leave my career, I made a down payment on another duplex doing any maintenance I could myself. If a physical setback of another sort should happen, I can hire.
IDA’s support for the education sector—including through the General Education Quality Improvement Program and the Enhancing Shared Prosperity through Equitable Services program—has helped Ethiopia expand access to quality primary education over the last nine years. Primary net enrollment rate increased from 79.1% in 2006 to 99.3% 2016. There has also been a considerable reduction of the gender gap for schooling. The ratio of girls to boys for grades 1–8 increased from 0.84 in 2006 to 0.92 in 2016. The gross enrollment rate for secondary school (grades 9–10) increased from 37.1% in 2007 to 44.8% in 2016. Through the Country Partnership Framework, the Bank is working to improve the quality of and equitable access to education to address issues including high dropout rates and low learning outcomes, especially for girls.
I am still working on my passive income, however I like multiple income streams even more. My favorite is capital gains because it is one of the lowest rates. One of the best passive income streams is a pension/Social Security. As I near retirement, I like the concept of it supporting my needs and my 401k supporting my wants. In addition, my brokerage accounts are all at capital gains rates. Don’t misunderstand, I am still working on adding more because I like multiple income streams!

This is an interesting take and good advice for those who probably do not need to ever worry about becoming destitute. I’m sorry but too many of your options including your own list of income require quite a bit of initial investment/capital and these suggestions are useless to those living paycheck to paycheck. I’d like to see the average low to middle income household purchase additional property for rental, invest in their portfolio (if they can even start one), or even afford to have a vehicle or room to rent. Far too first world of a solution for the general public.
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]

While it is important to find something that you love to do and turn it into a money making business, you do have to be cognizant of the return as you pointed out. There are many opportunities that I found and tried out that at the time seemed great. But when I took a step back, I realized that I was working a lot for very little income whereas other things I love doing brought in much more money.
There was a time when CDs would produce a respectable 4%+ yield. Nowadays, you’ll be lucky to find a 5-7 year CD that provides anything above 2.5% The great thing about CDs is that there are no income or net worth minimums to invest, unlike many alternative investments, which require investors to be accredited. Anybody can go to their local bank and open up a CD of their desired duration. Furthermore, a CD is FDIC insured for up to $250,000 per individual, and $500,000 per joint account.
For instance, a business owner who works in the company she or he founded would have to pay an extra 15.3 percent in self-employment payroll taxes compared to someone who merely had a passive interest in the same limited liability company who would pay only income taxes. In other words, the same income earned actively would be taxed at a higher rate than if it were earned passively.
In focusing on your wealth management goals, investment income is obviously critical but you might fund your goals from wider sources of income.  A typical long-term portfolio might produce about half its return as income and the other half as capital growth, though in times of duress the capital growth component wanes.  In this low-interest rate climate, some sources of income have become quite expensive and may prove disappointing against your spending needs.  But by tax efficiently and sustainably drawing income from wider sources, you might meet your goals while more prudently balancing risk against reward.