Guilou keeps her sunshine in bottles — a small, bright collection she blows into being and shares with her mother in their gray city. When a friend falls ill, she faces a hard choice: keep her very last drop, or give it away. The Last Drop of Sunshine is a quiet, lyrical picture book about generosity and friendship for children ages 4–8 — a story about what it means to share the good you have with someone who needs it. Perfect for: lessons on kindness and giving, gratitude units, and any child learning that a little light, passed on, goes a long way.