1) On A Magical Do Nothing Day by Beatrice Alemagna - Give the gift of a magical do nothing day! This multiple award-winning book encourages unplugged outdoor exploration. Both the art and the text are fully worthy of the name magical!
2) The main character's jacket in this book is kind of iconic, often the only bright spot in the moody woodsy spreads (in the printed book it's almost a neon ink used for the jacket.) This is a great kids size Patagonia rain jacket in a similar color that would be a great (and useful) companion gift.
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