Wikipedia’s entry on laser engraving
Sure, there are lots of ways you can sign a project. Maybe you want to study pyrography or get your hands on a brand.
But, if you really want to get fancy for a special piece, why not consider laser etching on your wooden project?
This Wikipedia entry gives the basics on how laser etching works, what material can be etched and the different technologies that are used to do the etching.
Most trophy shops offer this type of service, so be sure to call locally to find out where it can be done.