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 found a place in southern Germany that has blimps you can ride on, booked a ticket for summer of 2020, then the rona happened. That company shut down during the lockdowns. No blimp for me.