With the exception of the Production Line, all Edison Pens can be ordered completely custom.
Below you will see a slideshow of some materials that are available for pens. However, this merely scratches the surface of what pen materials are available for custom orders.
Custom orders are encouraged.
Want to place a custom order? Make sure to read this page to see How Things Work Here.
In the meantime, below is a slideshow showing many materials that are available.