They will suggest pens, fountain pens, ball point pens, chalk, colored pencils, markers, paint, plaster, clay, soft bricks, etc. C stands for combine. List things that are combinations that are interesting. A pencil with an eraser. Broccoli and cauliflower to make the new vegetable.
Sugar cookies with chocolate chips to make a chocolate chip cookies.
Suggest food items, games, stereo and TV, etc. The Frisbee was first a pie pan from pies made by the Frisbie bakery in New Haven. 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.