As it just so happened a certain demon with a certain proclivity towards encouraging people to do things like eat forbidden apples and open boxes that did not belong to them just so happened to be passing by when Harry and his package made their way by. The curious manner the kid was shaking the thing it was clear to see he had no idea what it was so... being the ever so helpful creature that he was Crowley sauntered over.

"What do you have there?"