Think stuff that relates to the power of storytelling eg. everytime a character entered narnia in the narnia series (by wardrobe, painting, watching a train go past ect., Alice falling down the rabbit hole and entering wonderland, all the places the little girl from Aaron Becker's picture book 'journey' by simply drawing with a red crayon.
Also when it comes to metaphors using aspects of nature like water, flowers ect. would also help and with themes see which ones apply to your related text, for more variety I've attached a list here.
Hope this helps!
