Every year my son's elementary school makes a big fuss about one chosen book, this includes a costume to wear on the last day of the festivities. The year he was in kindergarten they did Dr. Suess. Each grade was assigned a different book to focus on. Kindergartners got Green Eggs and Ham. I decided to make him Sam I Am with a plate of paper green eggs and ham on his hat. He loved it and it was easy for him to be comfortable in his costume.