The Zen pen is a simple design that will show that you like wood.  This one is made with natural Buckeye Burl.  Buckeye is very unique in that it grows underground in the root system of west coast willow trees. The cap attaches to either end magnetically and the metal is all plated in black titanium. 

This pen comes with a Schmidt ceramic rollerball but can also be refilled with a Parker style gel pen.