I have Walnut!
It's been a while, but I finally came upon some naturally fallen branches and have turned them into a number of beautiful Pepper Mills. There's more on my site, including other sizes.
Buying a taller one for pepper and a shorter one for salt works well. An 9-in for pepper with this would be beautiful.
All have an adjustable ceramic CrushGrind® mechanism, with a 25 year guarantee.
