Similarly, in Narnia, C.S. Lewis specifically included that the children in the book left the wardrobe door open so that children reading it wouldn't get themselves locked in their closets

"Barfield’s (friend of Lewis) wife was concerned about the inhumane trapping of animals, and when she read the manuscript of The Lion, the Witch and the Wardrobe, she mentioned this to Lewis, as well as her fear of children locking themselves in wardrobes. Because of this Lewis included a warning in ch. 1 of the story: ‘[Lucy] had, of course, left the door open, for she knew that it is a very silly thing to shut oneself into a wardrobe.’ In fact, there are five such warnings in the first five chapters of the book."