Your go to way to earn money?

Painting, writing books, going to all the neighborhoods and collecting/harvesting everything and trying to get promotions as fast as possible. If you have teens I also give them part time jobs. And something I’ve never actually done but thought about when I was desperate for simoleons and didn’t want to cheat is moving in townie friends which gives your household and extra 20k if they don’t live with anybody else. Then moving them out again. I never did it cuz it felt too much like cheating.