Each year their seven qvevris are scraped clean by hand with a tool made of folded cherry bark.

BBC: Discovering wine in Georgia

Its cherry veneer, framed with maple, is decorated with porcupine quillwork, more conventionally used to embellish hides or birch bark, not solid wood.

WSJ: Changing Hands | We Are Here! | Native, North American, New | By Lee Rosenbaum