Instead of defying those baseball bat-wielding teens with a mailbox filled with cement, just try and make it way less fun for them.
When the latch wears out you can buy a new mailbox, or you can glue in a harddrive magnet to hold the flap shut. Should be fine as long as AOL doesn't mail out anymore floppies.
Custom made for large packages!
They aim high (and shoot high!).
In the barren wasteland of 2040s Midwestern America, survivors try to scrape together lives. And sometimes they make crappy mailboxes.