Hammer: gotten by integrating wood and stone.
Spear: gotten by integrating a cane and a blade.
Dagger: acquired by integrating a blade and wood.
Sword: acquired by integrating a dagger and a blade.
Pick-axe: acquired by hammering an axe.
Wall: gotten by integrating 2 rocks.
Crops: gotten by integrating leaves with fruit.
Fire: acquired by rubbing 2 logs of wood together.