Recycler water pipes are marvelous at filtering your smoke. The "Prometheus" Hemisphere Recycler with Propeller Perc from Sesh Supply is a great example. At first it looks simple and might soon be the most treasured piece of glass in your home. The ease of use comes from a bent neck style, 14.5mm female joint to the spinning propeller percolator, the "Prometheus" is highly functional. Standing at 11 inches it will fit effortlessly into any collection.