Is thwre any reason you specifically want a chillum? I cant think of a single advantage for one....
But hey, do you. In terms of construction, glass will always be top tier as it is an inert and clean surface. A close second is quartz/crystal, and smooth stone after that. Wood is common, cheap, durable, but is literally impossible to clean. Metal is glass but heavu, more durable, and gets hotter than the devils dick (especially a chillum)
And chillum technique is a whole thing, with pretty much none of them being beneficial besides the old school sadhu style grip. You hold the chillum upright between pinky and ring finger. Seal end with other hand and make a kind "ok" handgesture with your holding hand. The only venefit to that is its more sanitary and your hand catches the ash. But youtube is your friend hers
If youre determined to go chillum, make it yourself. Itll be the most rewarding.
Or save yourself a ton of frustration and purchase/make a bowl. You can make a bowl out of anything. Literally. Dig 2 holes in the earth, bam, bowl. Any piece of fruit or vegetable? Bam, bowl. Pipe fittings? Bowl. Car parts? Bowl. Tin foil and a pen? Bowl. Youre own goddamn nostril? Bowl
Get creative. I believe in you.....
.....i also believe you should be an adult and learn to roll, but hey, atleast i answer your post before shitting on you.