Doing the raised letters on the carts shouldn't be too hard.
1. Using a stencil of the word "Nintendo" draw and then cut out the letters.
2. Make the giant concave area around the cut outs.
3. Add a thin layer of wood under the concave section,
4. Place the cut out letters back into the holes of the concave section.
Vola, raised letters on a concave area. No carving or CnC needed.