I've used loads of different shit to make bongs with,It's wicked seeing someones face when confronted by a 2 stage potato bong.
I've also used car and bike parts,jars of every description and even a bucket, if it will hold water and I can seal it I will try to use it,I guess I just like playing around with stuff.
Without experimentation how would we have ever known about ganja,after all someone had to be the first.