A gravity bong(waterfall bong) will get you pretty toasted with just a little bit of weed.

Generally joints/blunts aren't the best if you're trying to conserve. Bong or a bowl is your best bet since you can snuff the fire after your hit it. Always try to minimize smoke escaping.
Orzy Reviewed by Orzy 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