Some of the earliest inventions of the Stone Age were simple hammerstones that showed evidence of battering, and stone cores, used for a variety of purposes, such as chopping. These stone cores could also produce sharp stone flakes when struck; the stone flakes were in turn used for cutting.
Another early Stone Age invention was the hand axe, created by continually shaping large stone flakes. Other inventors during the Stone Age used similar techniques to create large, sharp points, which could be hafted on a wooden shaft to make a spear or attached to smaller shafts to make arrows and darts. Later Stone Age inventions included small needles made of bone and antler as well as serrated harpoon points use for fishing.