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!

One thing I’ve realized is this: It’s FAR easier to work for an employer than it is to develop durable passive income streams for the average person. Why? Because working for an employer in a place that “needs” you means that it’s possible to show up and give a 50% effort. You can show up, put in your time, go home, have a beer, watch TV, and rinse and repeat all without REALLY having to put in the effort.

First of all, let's face the facts. Working 9 to 6, you won't have any time during the day. If you choose to have a second job during the evening hours, you'd get burnt out very easily. Chances are that you might under-perform in both the jobs. I recommend having a side business rather than a second job. Some investment of money and time would be required at first. I have come up with a few options that would require less work from you but would be a decent second source of income.

Indoor air pollution resulting from the use of solid fuels [by poorer segments of society] is a major killer. It claims the lives of 1.5 million people each year, more than half of them below the age of five: that is 4000 deaths a day. To put this number in context, it exceeds total deaths from malaria and rivals the number of deaths from tuberculosis.Source 15
You are also free to choose a fund that is based on any index that you want. For example, there are index funds set up for just about every market sector there is — energy, precious metals, banking, emerging markets — you name it. All you have to do is decide that you want to participate, then contribute money and sit back and relax. Your stock portfolio will then be on automatic pilot.
The aviation industry experienced a rapid transformation following deregulation. Several low-cost carriers entered the Indian market in 2004–05. Major new entrants included Air Deccan, Air Sahara, Kingfisher Airlines, SpiceJet, GoAir, Paramount Airways and IndiGo. Kingfisher Airlines became the first Indian air carrier on 15 June 2005 to order Airbus A380 aircraft worth US$3 billion.[199][200] However, Indian aviation would struggle due to an economic slowdown and rising fuel and operation costs. This led to consolidation, buyouts and discontinuations. In 2007, Air Sahara and Air Deccan were acquired by Jet Airways and Kingfisher Airlines respectively. Paramount Airways ceased operations in 2010 and Kingfisher shut down in 2012. Etihad Airways agreed to acquire a 24% stake in Jet Airways in 2013. AirAsia India, a low-cost carrier operating as a joint venture between Air Asia and Tata Sons launched in 2014. As of 2013–14, only IndiGo and GoAir were generating profits.[201][needs update]
Because of safety concerns for the prospective applicant, as well as security and communication issues, the CIA Recruitment Center does not accept resumes, nor can we return phone calls, e-mails or other forms of communication, from US citizens living outside of the US. When you return permanently to the US (not on vacation or leave), please visit the CIA Careers page and apply online for the position of interest.
Dividend investing is right up there for sure. You don’t have to charge $48. You can charge <$10 to boost sales. The internet has enabled so many creatives to publish their works at a low cost. People will surprise themselves if they try to create like when they were in school. The other reason why I have Creating Products edging out dividends is because of the much higher POTENTIAL to make a lot more money. For example, $20,000 a year in book sales requires $570,000 in dividend investments to replicate the same amount. Plus, there is capital risk. With book sales, there is a correlation with EFFORT, and you are not beholden to the whims of the markets.
Finally, make sure you can service multiple types of clients. This is the best egg to have. Even for something as simple as a dog walking business, you can service multiple types of clients. For example, you can offer a puppy walking service and an adult walking service. You can have weekends at the park services. You can offer to take the dog to the groomers. Try to meet client’s individual needs.
Roosevelt saw the economic Bill of Rights as something that would at least initially be implemented by legislation, but that did not exclude either the Supreme Court's development of constitutional jurisprudence or amendments to the Constitution. Roosevelt's model assumed that federal government would take the lead, but that did not prevent states improving their own legislative or constitutional framework beyond the federal minimum. Much of the groundwork had been laid before and during the New Deal, but left many of the Second Bill of Rights' aspirations incomplete. Internationally, the same economic and social rights were written into the Universal Declaration of Human Rights in 1948.
Unemployment in India is characterised by chronic (disguised) unemployment. Government schemes that target eradication of both poverty and unemployment – which in recent decades has sent millions of poor and unskilled people into urban areas in search of livelihoods – attempt to solve the problem by providing financial assistance for starting businesses, honing skills, setting up public sector enterprises, reservations in governments, etc. The decline in organised employment, due to the decreased role of the public sector after liberalisation, has further underlined the need for focusing on better education and created political pressure for further reforms.[354][355] India's labour regulations are heavy, even by developing country standards, and analysts have urged the government to abolish or modify them in order to make the environment more conducive for employment generation.[356][357] The 11th five-year plan has also identified the need for a congenial environment to be created for employment generation, by reducing the number of permissions and other bureaucratic clearances required.[358] Inequalities and inadequacies in the education system have been identified as an obstacle, which prevents the benefits of increased employment opportunities from reaching all sectors of society.[359]
One of the benefits of the time we live in is all the software and technology we have available. If you want to scale a business that’s bigger than yourself, you’re going to need systems in place to get you there. These systems should involve automating as much as you can. The less involvement of you in the day-to-day means you have time to focus on the big picture strategies that help your business grow. 

Infectious diseases continue to blight the lives of the poor across the world. An estimated 40 million people are living with HIV/AIDS, with 3 million deaths in 2004. Every year there are 350–500 million cases of malaria, with 1 million fatalities: Africa accounts for 90 percent of malarial deaths and African children account for over 80 percent of malaria victims worldwide.Source 9
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.
Retirees are paying a high price as the world stimulates its way out of the GFC (Great Recession).  After a 30-year bull market to the lowest interest rates the world has ever seen, bonds have become highly priced and now don’t generate enough to meet income needs.  Just 5 years ago the average income from $100,000 invested in a 10 year Australian Government Bond (10yrs) was $5,600 p.a.  – now it’s less than half at $2,600 p.a.