I thought only us old hippies were supposed to have no memory of the 60's
hehehehehehe ... Yeah, as is said, "If you can remember the '60s, you weren't there" - I can only assume that explains a lot that's sorta hazy (smokey?
A very serviceable, conveniently small and easily transportable pipe can be assembled at very little cost from metal lamp fittings available at any hardware or crafts store. As mentioned earlier in this thread, a bit of fine-mesh steel or brass screening (such as that intended as filter screen in kitchen water faucets - and that stuff is already cut round and sized pretty appropriately) is a useful refinement. Anything involving more than a couple bucks in parts is just showing off. Or, so I understand.