If you live near a university, there are likely all sorts of research studies looking for participants. While I was an undergrad at Virginia Tech, I got paid $500 to participate in a 6-week dietary study. The study provided all my meals and paid me, but I had to eat a 5,000 calorie diet of 50% fat for 6 weeks, plus I had multiple muscle biopsies, urine/blood testing, etc.
It’s good you are a skeptic. I can assure you that the income figures are all real. People make MUCH more than you think. People are just much more hush about it now due to big government and social unrest. Stealth Wealth is a very important movement for those who’ve been able to accumulate some wealth over the years. There is A LOT of RAGE from society against people with money. Perhaps you are one of them?
Do you enjoy fast food or going into retail shops? Many companies hire mystery shoppers to test the customer service of their stores. A common one is Subway, which hires mystery shoppers to ensure that "Sandwich Artists" are following all the franchise guidelines. If you have time and can travel to different places, this could be a good side hustle.
High-ticket consulting or coaching: You could sell your own high-ticket consulting or coaching products from your website. You'll still need a website, merchant account, sales funnel, lead magnet and many other items. But you can easily earn a substantial amount of money from each individual customer, making it well worth the arduous setup required. 
After you’ve built up a solid credit history by paying your mortgage for the duplex on time using your work income and rental income from the tenants, you will eventually be able to scope out another property. Get a mortgage on that, move in and rent out the other half of your duplex. Over time you can continue building up your holdings, but it will take years and years of grinding to start to make good income.
If you have a good idea for an app, and the skills to create it, then producing your own premium app can be profitable. However, with so many free apps available, it may be hard to convince people to pay. If you want to go down the premium app route, consider having a basic free version to encourage people to download the app in the first place. You can then provide the option of upgrading to a premium plan once users realize how useful the app is.
Although this line of work is seriously threatened by automation, there are still plenty of data entry jobs available in India. It is one the simplest jobs you can do online, and requires no special skills. You just have to have a computer, Internet connection, fast typing skills, and the ability to pay attention to details. Most freelancing websites list these jobs, and you can sign up on any of them to start earning in the range of Rs 300 to Rs 1,500 per hour.
Starting a podcast, like making a YouTube channel or blog, comes down to telling interesting stories and building an engaged audience. I’m probably sounding like a broken record by now, but you need a niche that you’re interested in and there’s already a demand for. Come up with a list of topics you’d like to talk about and then search iTunes charts, Google Trends and other podcast research sites like cast.market to see what’s currently out there and popular.
You'll also need ecommerce software, fulfillment software, worry about warehousing, customer service, refunds and so on. But that's not all. You'll also need traffic. Think search engine optimization, Facebook ads, and other social media campaigns. Sound like a lot of work? Sure, it is. Especially if you do it all on your own. You could opt for Amazon's platform, which might be the easier route. But, then again, at the end of the day, this is a serious business, which could produce significant profits. So you're either all in or you're not. 
Sign up with focus groups in your area. Studies that you are eligible to participate in pop up sporadically but pay quite well – often more than $50 for an hour of your time. You can also look for focus groups online but will have to sort through a lot of bogus “opportunities” and sites that ask you to pay up-front for the privilege of participating before you find anything worthwhile.
More and more companies and startups especially are embracing remote work—where you use online collaboration and communication tools to do your work from wherever you want. And you don’t have to be a 20-something hotshot designer or coder to reap the benefits of working remotely. Many remote positions are for customer support positions or other customer-facing positions that don’t require specialized skill sets.
You may have seen the lists on online; 100 plus ways to make money quickly or how make money fast online. Most of these lists are merely affiliate link spam. I mean no disrespect to fellow bloggers, but I’m not going to add to the noise and suggest you waste your afternoon filling out surveys. To be included on this list, the option needs to be a real way to make money and have the potential to pay greater that living wage. Plus, it had to be quick because that’s why you’re here.
In 2014, Caitlin Pyle made over $43,000 by working as a freelance proofreader…part time. When she wasn’t working, she even had time to go on several fun vacations. After she had a ton of success doing that, she decided she wanted to teach others how to do the same thing, so she started up Proofread Anywhere. Sign up for one of her free workshops to learn more about making money as a proofreader.
Here’s a good example of how lead sales can work in real life: My second website, Life Insurance by Jeff, brings in a ton of traffic from people who are searching the web to find answers to life insurance questions. While I used to have the website set up so I could sell these people life insurance myself, it was a lot of work to process all the different requests and clients. As a result, I started selling the leads I gathered instead.
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