Odysseus used a sharp stake to blind the Cyclops during his adventure. This tool was crafted from a giant olive tree and referred to as "the stake." After getting the Cyclops drunk on wine, Odysseus and his men plunged the stake into Polyphemus’s eye as he slept, rendering him blind. This act of resourcefulness allowed Odysseus and his companions to escape from the Cyclops' cave, highlighting the themes of intelligence and cunning in his journey home.