What's the one thing you love doing without intention of making money out of it?

I have generally seen this either in reel / film life or real life, where people who love what they do, tend to be -

1. Much more happier / satisfied everyday
2. They give way more of themselves into the task not because someone demands it, but because they want to, they enjoy it
3. They constantly improve and be better at this thing
4. They aren't in it for the money. They don't do things or learn more or put more hours because it's paying them, they do it because of the love for the thing. Money is just an add-on

Do you guys have anything like this in life which you enjoy doing so much and can do it without thinking about the money you'd get. This thing shouldn't be something you consume, but something you produce, even if it helps 1 person out, still counts!

Eg. You do coding, learn new things in it, not because it pays you, but because it's what you love doing. You'd probably still keep doing it even if it doesn't pay you anything