Cedar Plank Wedding Guest Registry

This is a really cool idea! I was contacted a few days ago by a local Portland dad who was looking for a pyrographer who could burn the first names and year of his son and daughter-in-law-to-be's wedding with a little leaf-work around the edges onto a large (36.5"L x 17.5W x 2"H), natural-edge cedar plank they had purchased. And what are the groom and bride-to-be going to do with this plank? They plan to use it as a Guest Book, of sorts, for...