What matirials can you use in a rube goldberg device?

In a Rube Goldberg device, you can use a wide variety of materials, including everyday household items like marbles, dominoes, toy cars, levers, pulleys, and inclined planes. Commonly found objects such as books, cups, and string can also be incorporated to create complex interactions. Additionally, materials like balloons, rubber bands, and kitchen utensils can add unique movements and effects. The key is to use creativity and resourcefulness to design a chain reaction that achieves a simple task in an elaborate way.