I am doing career day for an elementary school and want to get them excited about the possibilities of networking. Can anyone suggest a fun activity that helps them see the fundamentals? 3-5 graders.

I have set up basic labs in the past and let them plug in ports to get a ping to work. They enjoyed that. The last time I did it, the vast majority of student comments were either questions about how to be a hacker, or how Fortnite works. I ran Wireshark to let them see their ICMP packets get across the network when they got it cabled correctly. Just wondering if anyone else had any fun labs to show the students.