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.
Not exactly childish but, assembling furniture. I’m excited when I buy furniture that arrives disassembled because I get to look at the instructions and build it myself. I guess it resonates with setting up and assembling toys, just with adult things instead.