the price of the actual growler is not bad at the bar. A growler is 4 pints.. so anything in the $20 range, pretty much getting a free growler.
you can get some half growlers at specs with beer in them.. drink the beer, keep the glass.
mississippi mud is one that comes to mind, and it's cheap, about $3.50. screw top 32oz. half growler. I also got a pumpkin beer in that container recently, I think saranac?
Bring two of those in, a half growler is better; once you open a growler, depending on how much you drink, you may not be able to save it (it will go flat if most of beer is gone)
[This message has been edited by 62strat (edited 11/8/2012 2:43p).]