While some 'fropheads swear by vaporizers to imbibe their sacramental habifropzipulops mariphasa lupina, I don't like them. I think they are inefficient, don't vaporize the full psychoactive spectrum of active compounds in 'frop, and don't smell good. I prefer using the Water Puff.
Amazon sells them for $13. (As of 8/26 Amazon has pulled all waterpipes from its inventory.) It turns a water or pop bottle into a water pipe. It might not be as healthy for my lungs as a vaporizer but it tastes better and feels better.
Let this guy with a plastic marijuana leaf on his face tell you about it: