We worked with a lot of cardboard and some random seashells and broken clay to look like sand or dirt. Our theme was oceanic or the beach. Ashley came up with the theme and I though it sounded fun to do. Most difficult part of this project was lining everything up so the marble didn't drop or get stuck. The marble travels through bent pieces of a cardboard like material. I would put more twists and turns for the marble if I could go back and do it over. Im most proud of the fact that it sticks to the theme and worked.