Tools are one of the methods used to interact with your tribe and others. There are three groupings of tools; those for military use, those for musical(social) use and utilitarian tools.
The three tools available for military use are Throwing Spears, Flaming Torches and Stone Axes.
Stone Axes - These are good against other creatures but not very good against buildings.
Flaming Torches - These are obtained by being an herbivore in the creature stage, and are effective against buildings, but poor vs. other tribe members
Throwing Spears - These share the same strengths/weaknesses as axes but allows attack from a distance.
The three instruments for musical use are didgeridoos, wooden horns and maracas. They are used for socializing with other tribes. They all function in the same way, and you gradually to unlock them as you go through the stage.
There are three utilitarian tools: fishing spears, gathering canes and healing rods.
Fishing Spears - They allow your creatures to catch more fish from the sea. They are for Omnivores and Carnivores. If you are a Herbivore, you "fish" for seaweed.
Healing rods - This allows the creature carrying the rod to heal nearby injured creatures.
Gathering Canes - These allow the creatures carrying them to gather fruit from plants faster. They are for Omnivores and Herbivores. You do not receive these if you are a Carnivore.