Well this is embarrassing. I searched though the silverware and other stuff drawer for my favorite opener, but it's not there. Maybe. I did find a fork that had been missing from the silverware organizer for at least 8 months, I only know that because 8 months ago my ocd compelled me to order a replacement.
There is a church key in that drawer, but it's rusty.
When we go to the racetrack I carry a swiss army knife. It's saved the day a few times when someone has a beer too fancy for twist offs, but doesn't have an opener.
I've got one of those aluminum openers on the truck keychain, used it a couple of times.
But this is my favorite. It's simple and you can carry it in your pocket without sticking yourself with the pointy end of a church key. Picture from the internet since I can't find mine.