I really enjoyed https://steemit.com/freewrite/@tobetada/freewrite-contest-day-467-wild-and-woolly by @tobetada! It had just enough of a children's rhyming feel, ala Shel Silverstein, to evoke that sense of childhood that was its subject matter, but plenty of gravitas to tell us that it is a poem about being a child, not a poem for children.