Well, my personal favorite is weed and codeine syrup or just opiates in general(syrup is pretty available and cheap). or just weed and alcohol. Some people say it over powers but you must realize that weed is in fact a powerful psychoactive drug with a strong stone to it.
Opiates tend to have more of a light, floaty, goodness feeling that when combined with weed makes me feel just right. I wouldnt go to a party on opiates/weed tho, id rather just close my eyes and drift away(not to sleep, dont waste it you fool!)
Weed is also good with...well pretty much anything