I need a hobby any ideas??

I want to take up a hobby but I really need help choosing 1. I want to try something new. any ideas??

fishing, flying model airplanes or helicopters, bowling, hunting, golfing, mini golfing lol, laser tag, archery, paintballing

I enjoy playing the piano and swimming and I always wanted to try tennis. maybe you could try those activities

Swimming, skiing, snowboarding, cadets, fishing, tennis, singing, dancing, ice skating, scuba diving, diving, syncronized swimming, hockey, running, netball, basketball, cycling, acting, playing a musical intrument, badminton, gymnastics, football, rugby or collecting stamps lol (: hope you find one.

Play an instrument of any sort. I LOVE music. I saw this documentary that says music makes us really smart and helps prevent brain-disease, like dementia.
Plus you don't have to learn 'the right way' from a teacher or a book. I'm self taught on 4 of my instruments, mostly.
So I suggest piano. It's easiest to make stuff up and there's no weird technique you have to learn.
Just play random notes until you get something that sounds good to you.
The more you play the more you'll come up with and if you write songs, your songs will get more elaborate over time.