Someone in the mailroom gets the package and opens it, tells their supervisor and shows their co-workers. Everyone gets a laugh about it, but they tell anyone else they know at the company what happened in the mailroom. That kind of thing would spread around the workplace after a while and someone in a higher position will eventually hear it.
So the point wouldn't be lost, even if just a few were sent. You would get people in LFL talking about it. That would be enough for me. Of course, the more packages, the bigger the deal the people in the mailroom would make it out to be.