I was gonna make a bong toady, but I forgot that we don't have any caulking in the house. All i found was this elemrs glue all squeeeze n caulk shit. It says non toxic, but i don't know if thet necessarily means that it is safe for tokin with. It also doesn't really say wetehr or not it is heat resistant.
I thought of doing the pvc thig too, but I have this cup that I go years agowhen I was younger, from Red Robin. It looks sort of liek a lab beaker or something. I jsut have to find something to make a good bowl with. I was thinking just pure aluminum foil, but I'm not sure if that is safe or not.