1. get/find a thick wood plates. Cut to size or two halves. Chop-saw is your friend.
2. laser-engrave wood
3. lacquer wood
4. optionally assemble two halves of wood with hinges
5. 3D Design some feet for board
6. 3D print feet
7. Size and scale board and stones
8. 3D print stones
9. 3D print bowl for stones

I scaled everything, board, stones (and grid) to fit small stones 17.91mm in diameter and 8mm in height.

• Stones from this model by wildshark_524616
  Don't use brim, which is a pain to remove. Rather use a SuperTack Printbed or higher temperature to make sure the stones stick.
• Bowl from this model (includes stones from above as 3mf Project). A remix of JeremyToutain's FreeCAD model.
• This Grid to Laser-engrave from here
• Feet Model