One of the great parts about the online world is that a website and its domain name is like real estate - It can go up in value over time. In fact, sometimes just the domain name without the developed business can be worth quite a lot to some people. Of course, like almost anything mentioned here, the necessary know-how is required. If you’re willing to put some time into it, then you can earn a nice online income. So far I sold 4 domain names with an average price tag of a couple of thousand dollars. Nice income, considering I bought each domain for around $10….If this income stream interests you, check out flippa.com - It’s one of the best marketplaces I know for selling websites or domain names.
One of the most appealing options, particularly for millennials, would be #12 on your list (create a Blog/Youtube channel). The videos can be about anything that interests you, from your daily makeup routine (with affiliate links to the products you use), recipes (what you eat each day) or as you mention, instructional videos (again with affiliate links to the products you use). Once you gain a large following and viewership, you can earn via Adsense on YouTube.
It was easier recouping the lost $60,000 in rental-property income than I expected. For so long, my primary mindset for passive income was rental income. Having $815,000 less mortgage debt but still generating roughly the same amount of passive income with a much larger cash balance feels great. Further, my passive-income portfolio got even more passive, which is good as a stay-at-home dad to a newborn.
If you have specialized knowledge in a certain topic, you can put together an online course to teach others. For example, if you have experience in real estate investing, you can create an online course “Real Estate Investing 101”. The benefit of an online course is that once you create the course material, you can sell it to as many people as you want.