I build a website that helps people navigate life in Germany. It requires little work and pays the bills. I still have to work, but if it's sunny outside, I am rarely stuck behind the keyboard.

Unfortunately, I don't think I could easily reproduce. I wouldn't have the energy to do the same in a new location. Even in my little circle, I have many competitors, though they are fortunately not that good. If there was an easy recipe, everyone would do it.

I guess the general idea is to build something that decouples payout from income, and avoid obligations that force you to work on a fixed schedule. It's important to me to be able to let the website run itself for a week or two.