Bamboo Bathroom Sink

They're expensive ($580+), and require special care. They come in only one shape, but many colours.

Made by Modern Vessel:
"Sustainability is an important value at Modern Vessel and bamboo is perhaps the ultimate in sustainable construction materials. The stalks grow to maturity and are typically harvested in just 4-7 years. Moreover, only the stalks are harvested, leaving the clumps and roots to begin growing back almost immediately. Land is not left barren and soil erosion is minimal."