The Yale students threw them and since they hurt when they hit someone, they yelled Frisbie when they threw them. When plastics came in, the Frisbee toy as we know it was invented. A plastic ring became the hula hoop. A paper cup or can be used to hold pencils. Ask them to identify other uses for a Pringle's can or a plastic container or basket.
M stands for magnify, minify or modify.
First ask them what the word magnify means. A coffee cup or mug when made larger becomes a root beer stein or beer stein. A can made larger is a grain silo. They should suggest things like carry large items. Ask what minify means.