Apparently I'm rather odd, in that as soon as I saw it, I claimed it. "Oh, I am taking that home!" My coworker looked at me oddly. "You know, you can freeze fruit, shatter it. You can make a spooky cauldron. You can even make root beer!" He gave me that look; you know the one. It says, Okay, sweetie. I'm glad you're excited. You're weird for it, but hey, I'm happy that you're happy.
This is the same reaction I got from a second coworker.
Then, as I was walking out of the building, I passed Kevin. I do so adore Kevin. He gave me the curious look: You have a box. That's not one of our normal boxes. The box has frost on it. Tell me about the box!
I had just the slightest hesitation before telling him about it. Twice bitten, whatnot. But this was Kevin! He did not let me down.
"Ohmygod, dry ice is. so. cool! You can do so many things with it! Like a spooky cauldron. Do we get this in a lot? Where can you even buy dry ice?*"
I love Kevin. But he was not getting my dry ice. He can have the next batch, though, I swear.
I'm gonna stand on this side of the normal line, with Kevin. Life's always more fun over here.

*Dear those closer to the west coast (okay, mostly Utah). You cannot buy dry ice in supermarkets in the east. I know, this is odd to you. It is, nonetheless, a fact.