After creating the keeper for my plain cap, this was the obvious next step.
You should buy a DrinkTank: http://drinktanks.com
Here's the plain cap if you need it: http://www.thingiverse.com/thing:2095569
Don't carry your growler by the lanyard loop. It will break and you'll be sad.
"But moofie!" you say.
"I have a Keg Cap!" you say.
Fear not. moofie gets you.
http://www.thingiverse.com/thing:2100914
"But moofie!" you say.
"I have a Kegulator!" you say.
I say tough noogies, I don't have one yet. But I will. I will.
The author marked this model as their own original creation. Imported from Thingiverse.