Simulated food keychains, also called simulated food model pendants, are innovative keychains that are made of polymer chemical materials and produced by special processes. They are artistic models that are almost the same as real food.

Early food models were mainly used in restaurants, also called "three-dimensional menus" instead of real dishes or menus, displayed in special windows at the entrance of the store or in the store, to attract customers to enter the store or provide convenience for customers to order when entering the store and increase the ordering rate and increase sales.

Now many businesses have applied this kind of crafts to interactive marketing with customers, customized into various food model keychains and given to customers, so that customers can think of the business anytime and anywhere, which is a good personalized advertisement.