They were selling these really cool-looking bottle openers — I don’t know their exact brand, but here’s the closest thing I found on Google:

And here’s the move she was more or less doing the whole weekend (but not with a knife):

I understand not playing with them meant people wouldn’t really know what they were, and had I been selling those I would’ve done the same thing, but god, how I wished she would sell out.

[EDIT]

Ah, the magic of internet: we’ve traced the artists and the brand back! The bottle openers were from BBbarfly Bottle Openers and the artist who had customized them is Shane Kirshenblatt (or Kirshy). Do check them out, they’re pretty cool!