Families can talk about how friendships and relationships with siblings can change. Has this happened in your life? How did you dealt with it?
Have you ever read a story about twins? Can you imagine what it would be like to be a twin? What would be the upside and the downside?
Is there anything in nature that you like to look at, or a place you like to go, that brings you comfort, the way looking at the stars comforts Poppy and makes him feel peaceful?