Quote Originally Posted by Purple Banana
I wouldn't attempt to make your own bong for the first try... Most homemade bongs, especially made by those who aren't familiar with the workings of one, do not turn out well, and end up leaking or what have you.

If you're 18 or know someone who is, buy a cheap personal PVC bong for like 15 bucks at a headshop. It's like having your own personal mini bong And it works well. Good luck!
I would avoid pvc because of the harmfull contaminates such as lead, dioxin, phthalates, etc. Especially in conjunction with flames required for smoking.