Simple enough, really. A full-sized replica (painted plastic with a post that can be cement-mounted) of a famous person, with a mail slot built into them. Could also be made of something more durable, like concrete, if necessary.
Extra-special editions could have solar-powered speakers and a set of short catchphrases that play when mail is inserted. Examples include:
Tom Cruise: "Do you know the history of the post? I do." George H.W. Bush: "Not gonna do it. Not gonna pay those bills." George W. Bush: "I have acquired political mail, and I intend to read it!" Bill Clinton: "I did not have literary relations with that woman." Bruce Willis: "Yippee ki-yay, mother mailer."
...and other irreverent pop culture references.-- shapu, Mar 16 2006 these aren't famous people but..... http://growabrain.t...art_mailboxes_.html [xandram, Mar 16 2006] What do they say after someone runs over them with a pick-up ute?-- DrCurry, Mar 16 2006 "My post, Joe. I can't feel my post."-- NotTheSharpestSpoon, Mar 17 2006 or Famous Cartoon Character like Mickey, Dogbert, Hobbs, Bugs, Casper Milktoast, Batman, or...-- popbottle, Dec 17 2013 random, halfbakery