This is the kind of picture book that justifies its Caldecott Medal. Santat's art is stunning—lush, dreamy, and detailed enough to reward multiple readings. The story itself is clever: instead of a kid imagining a friend, the friend imagines himself into existence and then goes on a quest to find his kid. It's sweet without being saccharine, and it sneaks in real lessons about courage, patience, and the reciprocal nature of friendship.

Parents and kids love this one. The four-year-old who demands it daily? That tracks. It's the rare book that works for bedtime (calming, gentle) and daytime (engaging, conversation-worthy). No red flags, no weirdness, just a beautifully told story that celebrates imagination and connection. A must-have for any home library.