As an adult, what seemingly childish things do you get excited about?
I love bridges. If I see a cool looking bridge, I want to cross it, especially if it goes somewhere that I'm not familiar with. Same with stairs outdoors. They feel like an adventure to me.
I love just sitting and watching the rain. The fresh smell after a strong rain. The way everything gets cooler and darker just before to end in a myriad of colors afterwards.