Being from the Chesapeake Bay area and a fan of maps, I made a to scale, topographic map of the Chesapeake Bay, and then made it into a coffee table.
With cad software you can scale this down or up to engrave onto almost anything. You could also do another region.
Lumber- I used 2x12 Pine, it would be better to use Oak or Walnut or anything other than Pine.
Rhino (or any other drafting software)
1" Black Pipe
1" Pipe Flanges