That's fastest method of creating a hollow rounded clay form?

The fastest method for creating a hollow rounded clay form is using the pinch pot technique. Start by forming a ball of clay, then insert your thumb into the center and slowly pinch the walls while rotating the ball to maintain an even thickness. For larger forms, the slab-building technique can also be efficient; roll out slabs, then join them to create a hollow shape. Finally, using a potter's wheel can rapidly produce uniform circular forms, but it requires some skill and practice.