What is the weirdest thing you've ever received in the mail?

I just got some kind of book bag from the New Yorker, but I was expecting it, and it isn't very weird. I don't need a book bag but, hey. It'll go with my luggage stuff in the garage. Ya never know when I can go see the rain in Spain by plane.

A dear friend who lives in the boonies sent me the tail feather of a red-tail hawk. I had no idea it was coming.

Went nuts. Tres beautiful and a great suprise.

A friend who was visiting once brought me a set (set? clutch of? well, some) of peacock feathers, also a beautiful surprise. I've known her since we were nineteen.
Egads and little fishes, as was once a common phrase.
Ah, but those weren't in the mail, so maybe not the total surprise to get something.