Man... I remember opening cans with an opener like that. I was a kid and they were coke cans... but I hadn’t thought about that in years. Big hole to drink out of.. and smaller one for air. Wow...
When I was a kid, practically every used car you bought came with a churchkey in the glove compartment, for the convenience of the new owner.
I remember being allowed to open a steel can with a church key all by myself (and doing it right) it as something of a rite of passage.
One of my fraternity brothers had a necklace made of church keys.