this space was blank so ....

If you look at the dailyish signup page, near the bottom there is a big, blank space. I want to put a note there with a picture. and the note says "this was a big blank space. Rather than figure out a way to fix it, I decided to put a picture of a _______." and then the picture.

So! What should the picture be?

The above image is probably copyrighted, but I'm thinking there are other mailboxes out there.
How about members submit a photo of their own mailbox?

Set up a mailbox by one of the wofaties and take a picture of that.