Which famous children's author was also a product designer who created the self-righting 'Newell Boat' after his son tragically drowned?

In the world of arts and literature, product design often plays a crucial but overlooked role in shaping iconic elements of beloved works. From the detailed descriptions of magical items in fantasy novels to the carefully crafted props in theatrical productions, product design enhances storytelling and creates memorable cultural touchpoints. This trivia question explores a famous author's contribution to product design that transcended literature to become a real-world phenomenon.

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J.M. Barrie (Peter Pan)
A.A. Milne (Winnie the Pooh)
Peter Newell (The Rocket Book)
Lewis Carroll (Alice in Wonderland)