Shop › Washi Kozo Celadon Notebook Image 1 of 1 Washi Kozo Celadon Notebook $45.00 Handbound using French link and Coptic stitches. Paper is made of bagasse, a byproduct of sugarcane. Add To Cart Added! Handbound using French link and Coptic stitches. Paper is made of bagasse, a byproduct of sugarcane.