I think that one of the companies is called Fagerstrom (?)...when I last looked at their wares, they looked like way big fun. Apparently some of the instruments have different settings to simulate different types of pipes. One of the appeals is that they take standard earbuds so you could practice on the commuter train, while at jury duty...etc. Looks like a foot long piece of pvc pipe, too. Love to jack one of these into a stack of Marshals turned up to eleven.

Best

AA