Which innovative marketing strategy did Stranger Things use in 2019 that led to a major retail trend across entertainment properties?

The entertainment industry has dramatically changed how retail brands market their products. From celebrity collaborations to viral TikTok products, pop culture has transformed marketing strategies in the digital age. This trivia tests your knowledge about a groundbreaking marketing approach that changed how products connect with entertainment fans. Think you know how brands leverage pop culture for sales success?

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In-world fictional product placement with real-world releases (Scoops Ahoy ice cream, New Coke revival)
Character-operated social media accounts posting exclusive product codes
Augmented reality shopping experiences through mobile cameras
Limited-edition NFT collectibles tied to physical merchandise