Which of these products from literature was successfully developed into a real commercial product that consumers can purchase today?

Throughout literary history, authors have created fictional products that transcended the page to become cultural phenomena. Some have even inspired real-world counterparts! Test your knowledge of these famous products from literature that have had a significant impact on popular culture, marketing, and consumer imagination. Can you identify which fictional creation actually made the leap from page to reality?

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Bertie Bott's Every Flavour Beans from Harry Potter
Slurm soda from Futurama
The Restaurant at the End of the Universe from The Hitchhiker's Guide to the Galaxy
Schrute Farms beet products from The Office