Cute mailbox idea

While in Pennsylvania, I visited a friend who lived in Texas for a time. She decorated her mailbox with all kinds of stamps, then sealed it with clear polyurethane. They are applied in a jumbled manner, like they were just tossed on and stuck. She said she bought a bag of mixed stamps cheap. It will be difficult for me to do, because once they are applied, they won't be salvageable, but I suppose it could be okay, and it sure looked cute.