Here is a simple pattern for you to cut. This house number plaque would make a nice gift. You could use contrasting woods or paint the backer board. You want to make sure the numbers stand out from the backer board so it is more easily seen from the street.
The plaque can hold a maximum of four numbers. If you need more numbers You should increase the size of the plaque. If you shrink the numbers they will become too hard to see.