The crossword solution for the term 'Toon Collectible' is CEL. CEL stands for celluloid, which is a type of transparent plastic sheeting that is used to create animation cels. Animation cels are used in traditional hand-drawn animation and are painted on the back of the CEL. They are then placed over a background image and photographed to create the illusion of movement. Toon Collectibles are items such as animation cels, production drawings, and other items related to the production of animated films.