The word of the day is: Nonsense
Nonsense is a noun, defined as - spoken or written words that have no meaning or make no sense.
Or, Foolish or unacceptable behaviour.
Nonsense can be a writer's best friend. When I am planning a novel I write every thought that comes to my head and weed out the ones I don't like afterwards. Surprisingly, the nonsense ideas are often the ones that give me the best outcomes.
If you are looking at writing children's books then nonsense can be the funniest thing to a child, make things up; words, characters, places, actions, anything you can think of. The first nonsense thing I think of when thinking about children's books is the whizzpopper from Roald Dahl's The BFG and in particular how much joy and laughter it brought me reading this book as a child.
To write a scene of nonsense, the story must have structure and move the scene forward but exercise as much imagination as you care to let lose on your work. Have fun!
Signing off for now,