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The entire flashback sequence done in storybook/WB style drawing.
The entire first fight of mice vs. toys would also fit this.
Also, there is a few comical scenes with Marie trying to get to the Land of the Dolls when her other friends leave through swans, she uses a duck to get to it, though it causes her to scream while he squawks and flies and later on, she is tossed in the pool of water by him.