A client asked if I could make and engrave some tiny puzzle pieces (1.2" x 0.75" x 0.625"). I cut these two out as a test, and engraved my kid's names on them. Right one is Cherry, left is Mahogany with one coat of Danish oil.
Engraving is 0.09" - 0.11" tall, and came out a little cloudy. Wish I had a laser to see if that would work better.
Anyways, I'll probably make a necklace for my wife out of these 'test' pieces.