Coors came out with a party ball which was in a box for home use. You also had to buy the tap for it. You owned the tap.
Being out of liquor Biz. for a while, I know they quit making them about 15 years ago. I dont know if anyone else came up with them.
I think they had @ 2 1/2 - 3 gallons of beer then in them.
Funny to see something Like this come up now!