Marbled bowl

Roll two balls of white clay and one of black.

Roll the balls to sausages.

Twist the three clay sausages around each other and roll them into one long sausage. Twist the sausage around itself and roll it to a long sausage again. Repeat, until you achieve the desired marbling.

Roll the clay flat with a rolling pin and cut the edges off to shape the clay to a circular shape.

Place the piece of clay in a bowl.

Using your fingers, make waves in the clay along the inside of the bowl and let the clay rest like this while it dries.