Fred Flintstone??

At the beginning of the circus, when the abominable snowman is hand cranking the musical instrument that has the three little drumming figurines on it, one is a clown, one is a dog, and one is...Fred Flintstone?? Even though they turned his little plastic head away from the camera, his profile is unmistakeable. His orange outfit with the green tie also make it clear.

Just thought that was funny :)