I assume your question is on how to do it?
If so, there are a lot of choices. I've seen wood burning used (by hand and by Laser). You could do an inlay. You could hand letter it (pinstripe style). What I am looking into right now is adhesive backed vinyl. Not easy to find in Japan so far, but I believe Wolfie351 suggested that craft stores in the US would often have craft cutters that can cut out your custom pattern. :dontknow: