I have two awesome kids and we have an ongoing project, the Derm60 and DP60 YouTube Channel. Each video contains Dermatology and Dermatopathology clues and tips in about 60 seconds or less! They are narrated by my son, with help from his sister, of course. We started when he was only 10 years old.
My son says he might want to be a sports broadcaster, so now I can always tell him I gave him his first internship in play-by-play narration. This is deliberate practice of difficult words in action!