By the way: the mice and cheese appetizer comes from the ‘Key Ingredient’ website:
https://www.keyingredient.com/recipes/2909585032/mice-cheese-appetizer/
(I might use tiny capers or something else edible for the eyes, though...)
The baby chicks are deviled eggs with black olive eyes and carrot beaks. I think peppercorns or capers might result in dental emergencies.
In my deviled eggs I hide a sliver of anchovy at the bottom (unless my wife is eating them).
The mice and cheese would be a big hit here and we love capers so the pepper corns are out of luck.