On paper, it may seem easy to invest in real estate and earn the rent as passive income, but in a practical sense, it is often difficult to translate this investment into income. Identifying the source which will generate a stable passive income is probably the biggest challenge you might face. You may require external help. Most activities that generate passive income, like starting a blog or selling items on Craigslist or eBay, can end up taking so much time that they aren’t really “passive” activities anymore.
Online courses have exploded in the past five years. Experts and creators can now create video courses to teach others their craft. A course can be about anything that people want to learn. Friends of mine have created courses and say the amount of effort is similar to writing a book. But once its done and starts to sell, it’s a solid passive income stream.

Humor: Old Spice’s viral video marketing campaign used humor to great effect. They had to. After all, there aren’t many other interesting ways to promote a deodorant / body wash. But they did it with a knowing smirk. The brand didn’t mind poking fun at itself. And it worked. The usage of humor introduced the brand to a younger, Internet-savvy audience.
Rebranding is the process of changing the corporate image of an organisation. It is a market strategy of giving a new name, symbol, or change in design for an already-established brand. The idea behind rebranding is to create a different identity for a brand, from its competitors, in the market. Description: There are several reasons for a company to go for rebranding. One prominent factor is t
'The influencers in order to communicate marketing messages to the audiences you seek to reach'.[36] In business, it is indicated that people prefer interaction with humans to a logo.[37] Therefore, it seems that influencers are on behalf of a company to build up a relationship between the brand and their customers. Companies would be left behind if they neglected the trend of influencers in viral marketing, as over 60% of global brands have used influencers in marketing in 2016.[38] The influencer types come along with the level of customers' involvement in companies' marketing.[39] First, unintentional influences,[40][39] because of brand satisfaction and low involvement, their action is just to deliver a company's message to a potential user.[41] Secondly, users will become salesmen or promoters for a particular company with incentives.[40][39] For example, ICQ offered their users benefits to create the awareness of their friends. Finally, the mass reached influencers are those who have a huge range of followers on the social network. Recent trend in businesses activity is to offer incentives to individual users for re-posting the advertisement messages to their own profiles. A common type of an incentive puts all the re-posting users into a random draw for a valuable gift [42]

This is the best post I’ve seen on passive income streams. I’m similar to you in that I worked in IBanking for a few years but wanted out. My approach is a little different, instead of starting with the CD’s, I’m trying to build up my net worth with riskier asset classes such as stocks and real estate to get the benefit of compounding. Then, as I approach my retirement year goal, I’ll start moving them into CD and bond ladders. In theory at least, it’s best to have the highest net worth just before retirement, then convert them to risk free passive income. You’re method is more patient and probably more practical than mine. I guess I’m willing to take more risks.
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.
Writing an e-book is very popular among bloggers, as many have noted that “it's just a bunch of blog posts put together!” You will not only have to make an investment of time and energy to create the e-book, but market it correctly. However, if marketed correctly (through blogging affiliates in your niche, for example), you could have residual sales that last a very long time.
There is debate on the origination and the popularization of the specific term viral marketing, though some of the earliest uses of the current term are attributed to the Harvard Business School graduate Tim Draper and faculty member Jeffrey Rayport. The term was later popularized by Rayport in the 1996 Fast Company article "The Virus of Marketing",[12] and Tim Draper and Steve Jurvetson of the venture capital firm Draper Fisher Jurvetson in 1997 to describe Hotmail's practice of appending advertising to outgoing mail from their users.[13] An earlier attestation of the term is found in PC User magazine in 1989, but with a somewhat differing meaning.[14][15]