Disney movies are pretty damn clever, and often drop in little details and Easter eggs for fans to pick up on.
So we want to know which little detail in a Disney movie always blows your mind. It could be that Rapunzel shows up in Frozen.
Maybe it's a ~look to the future~ that you noticed, like this nod in Zootopia to Moana, which had yet to be released at the time.
Or the fact that one of Belle's books in Beauty and the Beast looks an awful lot like it's foreshadowing the story.

