1. Copper: Copper is a widely used conductor due to its high thermal conductivity and affordability. It's used in cookware, pipes, and electrical wiring.

2. Aluminum: Another common and efficient conductor, aluminum is lighter than copper and often used in heat sinks and foil.

3. Silver: Silver actually has the highest thermal conductivity of any metal, but its cost limits its widespread use. It's often found in specialized applications where high heat transfer is crucial.