The main theme of Jane Yolen’s Birthday Box is the need to make the most of one’s life, no matter what happens. The protagonist (Katie) is puzzled by her dying mother’s final birthday gift – an elaborately wrapped empty box. She takes her mother’s mouthed words “It’s you” as meaning “It’s for you” or “It’s yours”. A year later, she realizes her mistake. The birthday box is a symbol of herself: beautiful on the outside, but still empty inside. Her mother’s challenge is to metaphorically fill the box. Not with things, but experiences and achievements. Other themes: compassion, thoughtfulness, motherhood, death.