When I explain cultural misappropriation to children, I use the example of The Nightmare Before Christmas. It’s effective because especially for children, who don’t have enough historical context to understand much of the concept, you can still fully grasp the idea.
There was nothing wrong with Jack seeing the beauty and differences in Christmas town, it’s when he tried to take what is unique about Christmas town away from those it originally belonged to without understanding the full context of Christmas things is when everything went wrong.
When Jack tries to get the folk of Halloween town to make Christmas gifts for children, etc., children understand that the Halloween town folk do not have the full context for the objects they are making, and they are able to see that the direct repercussions and consequences are very harmful.
Explaining culture misappropriation with The Nightmare Before Christmas: