1. Copper: Widely used in electrical wiring due to its high conductivity and ductility.

2. Gold: Highly conductive and often used in electronics, jewelry, and decorative applications.

3. Aluminum: Commonly found in power transmission lines and kitchenware due to its good conductivity and light weight.

4. Steel: While not as good a conductor as copper or aluminum, steel is still used in various electrical applications such as motors and generators.

5. Silver: Highly conductive and commonly used in jewelry, electrical contacts, and silverware.

Insulator Examples:

1. Rubber: Provides excellent electrical insulation and is used in cables, tires, and various industrial applications.

2. Glass: Offers high electrical resistance and is used in insulators for power lines and as a barrier in electronics.

3. Wood: A natural insulator with limited electrical conductivity, often used as handles for tools and in furniture construction.

4. Plastic: Various types of plastics are widely used as insulators in electrical components, electronic devices, and everyday items.

5. Diamond: Despite being one of the hardest known materials, diamond is also a good electrical insulator and has applications in electronics and high-power devices.