Do you have hobbies other than gaming?

Other than school/work, what do you do to occupy your time? Back in the day, people collected coins, stamps, Bonsai trees -- I mean, tons of different things, but does GenZ even have hobbies?

I'm asking for my son, 23, who has been trying to find ways to use his time other than school three days a week. He has a lot of time on his hands and usually watches YouTube videos. I guess you could say that's a hobby, but not something that's productive unless you put to use what you learn.

He's kind of interested in blacksmithing, but having a forge out in the backyard or garage isn't an option.

So, I'm curious about GenZ hobbies. I have two GenZ kids and you all are amazing people.