I just finished a pottery class that I've been in for the last three months, and frankly, a bong is a pretty advanced project, at least making one entirely on a wheel would be. I'm good with my hands and am still rough, even after three months, on basic easy stuff like bowls and plain vases. I just think someone would have to be fairly skilled to make a bong, unless you just made a hole in a vase and then inserted the bowl and stem from someplace else.