I'm working on a homemade bong, all I need right now is something to use as a stem.
I plan to use a socket from my dads toolbox, but that's in his car which isn't here right now.
Any other, better ideas of what I should use?
here's what i have so far:

I've tested the stem hole and its water tight so I'm happy about that. I also breathed in some air through the water and it made that iconic bong sound
I'm debating whether or not carving out a carb is really necessary.