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Snap, Crackle, and Pop (s) (noun); Snaps, Crackles, and Pops
There were three little elves who ran around in a kitchen promoting Rice Krispies, Frosted Rice, and Cocoa Krispies for the Kellogg's cereal company located at One Kellogg Square in Battle Creek, Michigan: Both Snap, and Pop wore tall baker's hats; while, Crackle wore a red-striped stocking cap.
The elves derived their names from the Snap! Crackle! Pop! "sounds" that came from the Rice Krispies cereal in a bowl when milk was poured on it.