So the kid heard I might know a thing or two about random number generators and could see how these might be useful to choose a drink for dinner. So we worked on a short program together and he was quite happy with the result. We also had a good discussion about random seeds and when/if you want to use them. Altogether a great nerd-bonding session.
Then, being ten years old, he had to alter the program to his own satisfaction. He used his own name, but privacy and all of that- you get the point.