Passive income is income that requires little to no effort to earn and maintain. It is called progressive passive income when the earner expends little effort to grow the income. Examples of passive income include rental income and any business activities in which the earner does not materially participate. Some jurisdictions' taxing authorities, such as the Internal Revenue Service in the United States of America, distinguish passive income from other forms of income, such as earnings from regular or contractual employment, and may tax it differently.
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.
While these activities fit the popular definition of passive income, they don’t fit the technical definition as outlined by the IRS’s Passive Activity Losses—Real Estate Tax Tips. Passive income, when used as a technical term, is defined as either “net rental income” or “income from a business in which the taxpayer does not materially participate,” and in some cases can include self-charged interest. It goes on to say that passive income “does not include salaries, portfolio, or investment income.”

passive income youtube

1. The batting cage idea is very risky. I’ve seen many of them close over the years and it is not anything close to passive income if you want to keep the business going. You have to continually promote it and target youth leagues, coaches, schools etc to catch all of the new players who grow up and want to play. I’ve played at probably 8 batting cages over the years and 7 of them closed.
Build a list in a particular niche and tell them stories. Create a bond. Build a relationship with them. It's important. Then, when you've created a bit of culture, start marketing affiliate products or services to them that you think they might like. Just be sure that you personally vet out whatever it is that you're selling to avoid complaints if the product or service falls short.

How much money do I need to invest to make 3000 a month?