If you like the stained look, using this technique with alternating pieces of different woods might look pretty interesting. Get like 4 different hard woods, layer them 1, 2, 3,4,1,2,3,4,1,2,3,4,1,2,3,4 etc. Then Sand the shit out of it and stain it. That would be interesting looking.
I love CNC router's. I could blow some money playing with one of those.