I run a website that helps people settle in Germany [0]. It's monetised through affiliate income, mostly from insurance and banking products. If you move here, you need health insurance and a bank account.
It's not a very demanding job, since most of the content is evergreen. The website could run for months without attention, but I enjoy making the website a little better every day. I love being able to provide so much for free, and still live from it.
In the future, I'd like to hire someone to write more content. There are topics that just aren't interesting to me (like pensions and taxation), and others that I don't have enough exposure to (like studying in Germany). However, I don't trust others to put the same level of attention into the research and the editing.
[0] https://allaboutberlin.com/