Viking Drinking Horn
Pull up your longboat, or your cabin cruiser, and pour a nice cold beer into the Viking drinking horn (Amazon link). Drekka 24 ounces of your favorite beverage in this plastic vessel.
Suspend it from the neck strap it comes with so you can grab your longsword if you need to prevent your friends from stealing it.
Proudly display it in its stand and guard it closely.
The Viking drinking horn is BPA-free, and it has a stainless-steel edge.