We bought a 50 foot section of clear, heavy duty plastic tubing off Amazon.....it has stood up to several of our diggers. We had to let it air out for quite sometime out in the sun but now the plastic stink is gone and the gang loves it especially tied up in a knot!! Here's the link on Amazon: http://www.amazon.com/gp/product/B0006FKJD2 $ 62.95 for 4-inch by 50-feet. Jilli [Posted in FML 7388]