Organizing your own contest makes you want to be creative on the recognition token to be given out. This can include trophies, plaques, certificates, website badges, and the likes.
One suggestion that I kept getting is a specialty plaque that can be hanged or screwed on the wall. This is similar to wall address plaques that can be ordered online.
I know that is a bit weird but I guess uniqueness requires some element of fun, creativity, or novelty if you want to.
But seriously, if you have a posh home located in a prominent village, it is cool to look into a variety of home address plaques.