The crossword solution for the term 'Still Frame of Mickey, Maybe' is CEL. CEL is an abbreviation for a type of animation art known as CEL animation or celluloid animation. This type of animation was popularized by Walt Disney in the 1930s and 1940s and involves drawing individual frames on transparent sheets of celluloid. The frames are then photographed one at a time to create the illusion of movement. A still frame of Mickey Mouse, for example, could be a CEL animation frame.