What hobbies have you discovered after 30?

I am turning 30 years old tomorrow! I've had a very tumultuous decade and I'm trying to invest more time into enjoying my life outside of work and life-maintenance stuff. I am an introvert and enjoy spending time by myself. I don't have many friends and I'm OK with that right now. I am a crafty person, but not artistic. I don't have a lot of money right now. My only core hobby I've stuck with through the years is baking.

I picked up embroidery again yesterday and am really enjoying it. I believe this will be a core hobby. I also am slowly rebuilding a collection of houseplants. I enjoy reading, travel and spending time outdoors but I don't consider those to be hobbies.

What are some low-cost hobbies that you've picked up? How many hobbies do you have?