The hobbit pipe has a builtin cigarette filter holder and a fitted soapstone stand (I dont even smoke but found it cool haha)
The vaporizer pipe has these big slits at the bottom and holes above, meant to reduce heat. It can be heated with a flame and steams the herbs inside, no burning, ever!
But you need propane or some other clean gas, candles and butane have nasty particulates and tar inside (the bottom literally gets black) that you dont want to inhale ;)
Briar root wood is used by pipe makers around the world as it’s very resistant to fire. The grain of it is also very beautiful. Maybe you could experiment with that, plenty of pipe making tutorials around : artisans are tying to pass on the knowledge to a new generation of craftsman I think.
Oh and you can also do it with corn, look up Missouri Merschaum on the internet for corn cob pipes: you could also have fun applying this technique