I went to a school that did show and tell as a kid, and I can tell you, it works a lot better on this platform, where it's optional. We would do it on a certain day of the week, every week. It became very difficult to come up with things to bring in for show and tell to show the class. I don't even remember what sorts of things I brought in, but I remember disliking the task, because I had to come up with a new thing every week, and then go in front of the class and talk about it.