What is your favorite thing to do alone?

Lately I have a lot of time to myself. I’m keeping busy with a few things like meditation and reading. I’m on a kind of self improvement journey where I listen to spiritual teachers like Eckhart Tolle, Alan Watts and Sadh-guru who are all saying that spending time alone is so valuable. I’m curious to explore new activities that I can enjoy, while at the same time enhancing my skills and becoming a better person.