Fun things to write in a diary?

I like to muse about things like what is the meaning of true love? and bigger questions like what is the nature of the universe. I also like to make lists of things like healthy foods to snack on, recipes I want to try (and later, how they came out), prioritize my life (1. health 2. relationship 3. school, etc), think about what is most important to me. Try to discover who I am.