If you’re worried about launching a new product, and think you might need some feedback to make it really good, Flynn recommends “pre-selling” an idea — for instance, offering a limited number of spots or seats into, say, a course you create and giving the test group specialized attention so you can see how to improve the content. Once it’s revised (or, if it’s software, once all the bugs are removed), you could open it up to your whole audience.
I have only dabbled in drop-shipping before when I had an eCommerce platform 6 years ago or so. I think it is something that you could do on the side, but you would want to do in depth research on the industry you want to get into before setting up shop. It may be a little less passive up front, but over time you could take your hands off the wheel.