Linear Pottery culture
Because this was before the Bronze or Iron Ages, there were no metal tools, and everything the LBK people had was made from either stone, wood and plants (such as flax which could be made into clothing, and things that could be got from animals (like leather or fur). They even had sickles, which are used for cutting down grass and are half-moon shaped blades with a handle coming off one end; however theirs were made of wood with sharp stone points glued into them for the cutting.