I have always been interested in studying history. Not so long ago I studied the question of the correctness of the use of cannabis. And so much can be found in the history of the origin of this product and how it was consumed from the very beginning. For myself, I found a way out in the use of bongs. I read a lot of useful information on the site https://wayofleaf.com/accessories/bongs/how-to-make-a-cheap-ass-bong . I hope I will be useful for you as well.