According to the International Association of Military Museums' 2022 retail analytics report, which unexpected product category consistently outsells weapons replicas at military history museum gift shops worldwide?

Military history museums worldwide have evolved their gift shops to become significant revenue generators, offering everything from replica weapons to historically accurate models. Behind these successful retail operations are fascinating data analytics that reveal unexpected consumer preferences. This question explores one of the most counterintuitive findings about military museum retail operations discovered in a 2022 industry-wide analysis.

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Children's educational books about military history
Themed clothing items (t-shirts, hats with military insignia)
Military-themed culinary products (ration pack reproductions, cookbooks)
Collectible challenge coins and medallions