It's been really in three categories: 1. Projects that yield nothing financially. 2. Projects that help me establish me as a .. idk.. thoughtleader(?) in certa

It's been really in three categories: 1. Projects that yield nothing financially. 2. Projects that help me establish me as a .. idk.. thoughtleader(?) in certain specific niche fields. 3. I've written 2 libraries in particular that netted me a number of consulting gigs. For about 2 years I was able to travel around the world supporting myself with this, and I worked for companies on location in 4 continents. This was a pretty great time of my life, but I got bored working on a single project. So definitely more than beer money for that last one, but it might have been a fluke. Generally it's not my aim to do this for my side projects. I make enough money, so I do it because I enjoy it.