I use my Gravity Bong 24/7 if its just me. I have a little .1 gram bowl that I use with it, which is just the right size to get me blazed, and two bowls from it has me wrecked. It saves so much weed.

And personally, a normal bong tears through weed way too fast. Id use my pipe before Id use any of my bongs if I was trying to save weed.
imitator Reviewed by imitator on . The most efficient method of using what you got. What is the most efficient way to use weed? (using the least amount to get the same effect) pipe. joint. bong. eat. Rating: 5