Shallow square wooden tray or Nibutani-ita (二風谷イタ) with rounded corners and a raised lip, carved from one piece of dark brown wood. The tray is decorated with a symmetrical carved pattern made up of traditional Ainu spiral and fish-scale patterns. The lip of the tray is decorated at each corner with two wavy lines that connect at the corner with a darker scallop shape pointed towards the centre of the tray. The bottom of the tray has a rounded square dark background of fish-scale pattern carving. The lighter smooth pattern inside the tray is made up of a fish-scale diamond in the centre, with four thick, pointed spirals outlined in dark carved lines ending to the left and right of the tray. The surface of the spirals are shallowly carved out to be concave. Four fish-scale petal shapes are at the top, bottom, left, and right sides where the spirals touch. The top and bottom petal have two smaller smooth petal shapes nested at the bottom. Around the spirals, an organic shape is outlined in dark lines against the fish-scale background, creating a lighter rounded floral background for the spiral pattern and petals.