French firm Orée recently launched a new keyboard made entirely from a single piece of maple or walnut. Every keyboard is made to order and is crafted, polished, oil-finished and assembled by hand in their workshop in southern France. Via their website:

The keyboard is bluetooth enabled and retails for about $163 (€125.00). On their website you can customize Mac/Windows options, US/UK/Canadian keyboard layouts, options for keyboard fonts, and even a special message.