just pack cack and hoots (smalls amounts of weed that you can finishs in one hit, so you can blow it into a window, vents or bounce blower(the toliet paper roll/febreeze/deoderant thing, but bonce dryer sheets is what i use, they are prime) or what ever, then you dont have to worry about wasted weed or excess smoke leaking from you paraphernelia

and like i said the 'bounce blower' works awesomely, i used that, and i have never been caught, and i have done it with people upstairs