I could freeze them for iced coffees.

Actually, it would come in useful for when we have guests. Once they experience moka coffee, they can't go back... while they're at our house. In theory, if I've done the math in my head correctly, the 42 cup version would hold 84 oz of fluid/coffee, and dividing that by 8 oz would be 10.5 cups. Though I don't think it would be safe to consume 8 oz of moka in one go. I have several moka pots in various sizes. When I first came across my first pot, I was under the impression you could control how much coffee and water you could use. Much frustration later, I learned you can't. And I expanded my collection from there.
A brikka is a moka pot made by Bialetti only, I believe. I was under the impression it had been discussed at length on here months ago, but it appears I was wrong.