Nothing screams "I Love The Outdoors" like a mailbox with our state fish on it.  This Walleye Mailbox is constructed very well, and fits on posts that are 2X4 or 4X4.  Another idea might be to get other type of mailbox.  I've seen pheasants and other Minnesota animals used as mailboxes.  A great idea for the right outdoor enthusiast.  This product is available at the Minnesota Bound Store and several other locations.