Making my first cribbage board was the whole reason I started looking into getting a CNC router. It is nice to finally make one 18 months later.
I pulled in the map with the address for the cabin (X on the board) via OpenStreetMap downloaded SVG and then added in the depth lines with a vector-based map available from the DNR. I offset the path of the lake and then used a scatter brush to make the holes. I had to manually delete every 6th brush and do a little tweaking of the spacing on the holes on the sharp turns.
I did the CAM in estlecam for the holes, carve, and cutout (2 sided operation). I used lightburn for the laser engraving (the best $40 I have spent on this adventure).