This week I gave two presentations to middle school kids about the lab. They didn't have permission slips for the tour as well, but they were still inquisitive about what we did and asked a lot of good questions. It's nice to see kids excited about science, even if they thought the highlight of the presentation was when I broke a penny.
Then I gave a full tour to a group of high school chemistry students.  It's been a while since I've done a tour for kids who have a) had chemistry and b) really want to be on the tour so that was really cool.  They  had to write a paper on their experience so they asked a lot of questions and took notes.
It reminded me how much I want to teach physics, and I was happy that a few of them stayed an extra half an hour to ask questions about science in general.