If you’ve ever thought to yourself, “I wish there was a product that did this,” then invent it! Create a product, medical or otherwise, and sell it as a company or get royalties for it. It’s not impossible to figure out, I have many friends who have taken a concept to market. Don’t overlook an invention as a fantastic means of attaining passive income.
For someone my age, I have an extremely low risk portfolio of mutual funds, foreign currency, and bonds. It’s made a bit more risky by my recent exposure to cryptocurrency, but that’s the only “high risk” activity going on here. Nothing exciting, but it pays some nice dividends and beats the hell out of keeping money in a savings account. This is a way for me to hedge against the risk I incur by angel investing in startups.
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.