For me, it is reading, walking in the early morning, singing out loud while playing my guitar.
I have been reading a book titled The Happiness Project by Gretchen Rubin and found out that I only consider so little things that can be categorized as being fun to do during the pastime. Now, I am looking for more activities since I have so much spare time during this pandemic to keep my mind busy. I still got nothing. And here I am, roaming the internet searching for inspirations.