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.

Eat or vape.

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.

I would day a vape is the most efficient way, purely because you're only smoking the good bit. However I really think a bong is the most efficient way and as the guy above me suggested a gravity bong. They really do fuck you up on just a small amount!

Yup. If I only have an 8th or less I'll be taking GBs through the sack. Anymore than that its probably a joint or a bong.

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.

either a bowl or bong...gbs work great too...joints and blunts use the most unless ur rolling tiny, vapes are the most efficient tho

Vape, edibles, and G-bong.

HASH OIL!!
With 1/8 of weed, the amount of hash oil i get is enough for 2 weeks... And i smoke once/twice a day, everyday.
The advantage of hash oil is that it makes you stoned with much less weed, so you can be blazed every day, and yet keep your tolerance low enough.

Out of the four, I'd say a bowl, at least for me. It only takes me 2 hits, 3 at most to get ripped from using my bowl (bubbler).

I think bongs burn the weed too quickly because you take too big of hits, and you can only absorb so much THC at one time in the first place.

So, for me, I believe its bowls, or pipes.