11. DIY Cardboard Marble Run and Maze
Engineering meets play in this highly engaging cardboard marble run. Using a large, flat sheet of cardboard as a backing board, you can design a complex gravity-fed maze using cardboard tubes, folded paper tracks, and small ramps. Challenge yourself or your children to incorporate loops, funnel drops, and split paths where the marble’s direction is decided by chance. This project is fantastic for teaching basic physics, spatial awareness, and problem-solving. It is an ongoing canvas that can be expanded, modified, and decorated endlessly with colorful markers, paints, and stickers.