Yesterday, I gave a tour of the department to a thirteen year old and her mother. When I was thirteen, I wanted to be a costume designer for films (blame Lord of the Rings).
No, the girl wasn’t some kind of prodigy (although she did seem pretty smart). Her mum just emailed the head of the department, saying her daughter was interested in science and the university, and they were going to be in the area, so could they come and have a look? And he passed it on, and I volunteered. I was impressed, to be honest, that the girl had that much of an idea of what she wanted to do and was keen enough to want to find out more, which is why I offered to show her around. That, and it was a good break from revising, and it was a chance to practice talking about science to non-experts.