Warazan
Warazan was a system of record-keeping using knotted straw at the time of the Ryūkyū Kingdom. In the Southern Ryukyuan languages of the Sakishima Islands it was known as barazan and on Okinawa Island as warazani or warazai. Formerly used in particular in relation to the "head tax", it is still to be found in connection with the annual Itoman Giant Tug-of-War, to record the amount of miki or sacred sake dedicated.