I have 3 little siblings, now ages 10, 8 and 7. I taught the 7 year old a pull over when she was 5, I always thought and still think she has a lot of talent but she simply has no desire. Oh well.
I also used to spot them on back handsprings (I had a wedge mat) when they were younger as well as attempt to teach them handstands, cartwheels, backward rolls etcc...
Mind you I also teach in a gym.