make less weed go a longer way?

[Reefer Rogue]

ok im on my last bowl and 1/2 or so, and my brother and i plan to blaze it tonight... we have a little metal pipe and thats it, and methods to use to make the high richer/longer lasting?
our usual method is to sit in the room when its dark and play video games while passing around a bowl... thats it. then we find somthing to eat and chill...

Sounds like a plan.

Bong hits of knife hits.