I make bongs out of bottles, you can see here. I made the 1.75L version into a bong, and I have 2 750ml versions of the same bottle I am going to turn into bongs as well. I got the plastic stem, grommet, and metal downpipe off an old cheap acrylic bong. The parts work GREAT for these, I just don't really want to have to spend money on an acrylic bong just to take it's parts out for other use. Does anyone know of anywhere that I could purchase just the plastic stem, grommet, and metal downpipe new? They have to be new and unused because I plan on selling both of them and keeping the 1.75L bong for collection. I don't want to have to order from the UK. Thanks for any help you can give me.