1 Gallon Flask
I honestly feel that this particular item defeats one of the key components of other traditional flasks: discretion. I have no idea how you would be able to lug around 128 oz of any fluid in a convenient manner and the Sasquatch Flask just proves my point.
Still, it’s a pretty awesome way to carry around a buttload of alcoholic goodness to show off. Just make sure to share whatever you’re packing because a one-gallon serving of anything alcoholic is a recipe for disaster… And alcohol poisoning. ($30 @ Home Wet Bar)