I think the reason this book  has grown in popularity over the years is it  invites a parent and child to find things in the child’s room to which they can say goodnight. A lovely way for a child who is beginning to learn to speak to interact with a book. When they get a little older and becomes  goodnight ceiling, goodnight floor you know they are trying to stretch out that bedtime

Interesting Vocabulary
mush – porridge made with cornmeal
Here is the link for the book at the NZ National Library

Here is the link for the book at the Auckland Libraries

Click on the image to buy it, it is also available as a board book.