Metal

Aluminum is only bad for you if you overheat it.

Yeah, that's what I heard. If you actually light the aluminum and get all those nasty fumes and stuff and inhale that, say "bye bye" to your brain, but just letting the smoke go through it (like a bowl) is pretty harmless.

Glass Glass Glass!! Glass and wood!

Yeah, glass is cool.. I used to have a pretty cool glass piece before I broke it.

I like my piece that I just made because you can unscrew the whole thing into 3 different parts and clean it out. Hellooo resin!