Sustainable USB Drives Made From Bamboo. In efforts to produce a more eco-friendly preservation of clients photographic memories, I’m stoked to offer these new bamboo flash drives. Partnering with USBMemoryDirect.com, these drives offer a much more eco friendly and sustainable hard copy storage medium. The bamboo is very attractive and is a great way to store your images. These drives are constructed with an all wood, oval-shaped exterior combined with a removable cap. Magnets cleverly placed within the cap area ensure that it is securely held in place. As more and more newer computers omit optical disc drives, this is a great option.