Isn't it ironic that some of the best ideas in this market often come from entrepreneurs who obviously paid attention in science class? Resembling something you might spy in a chemistry lab, the Waterfall is an innovative approach to a gravity pipe. While the device looks complicated, its operation is deceptively easy and based on good ol' physics. Water is poured from the beaker into the funnel, and the beaker is replaced below the funnel. Finely ground tobacco is placed in the bowl on top of the funnel and lit while the water-release valve at the bottom of the funnel is opened. Presto! As the water drains into the beaker, smoke is filtered through it and pulled into the funnel. Simple and effective, the Waterfall produces potent results, and its high-tech look certainly will attract attention when displayed on your shelf. $$$