EzekielRaiden
Follower of the Way
Well, if we're allowed to reference things people have done on that front, there was a series of absolutely delightful 4e-based kid-adventurer things that were made a long while back. I'll have to see if I can dig them up. They were certainly a little simplified relative to proper 4e, but they had the overall power structure and basic notions, and the characters were specifically meant to represent the children of powerful adventurers who were going off to have smaller adventures of their own.I taught nieces and nephews how to play 3.5, and yes some were as young as 8. I did give them simple pregens, but they grasped the concepts of the game.
Teaching 5e would be easier, I'm not sure I would have tried that with 4e.
As I said, genuinely delightful, something I would have paid real money for if it had been a proper published product.
Edit: Aha! I found it, Jim Stowe's DND for 8-year-olds (humorous coincidence, there.) If you'd like direct links, here's his blog posts.
DND for 8-year-olds (boy characters)
DND for Dads 2, The Girls (part 1)
DND for Dads, The Girls (part 2)
Delightful, charming, and clearly 4e-based, despite being a bit simplified.