Define your house with these Italian ceramic number tiles in lemon, blue and white. The numbers are 47mm wide and 148mm high, and the 'ends' are a little narrower. The tiles are 8mm thick.
They are easily attached to a wall, wood or letterbox with a product like Liquid Nails or Gorilla Glue.
(Please note that the end tiles come in a pair, so they are $34.)