What are examples of a wheel and axle?

Examples of a wheel and axle include a bicycle, where the wheel rotates around the axle to facilitate movement, and a doorknob, where turning the knob (the wheel) rotates the spindle (the axle) to open the door. Other examples are a car's steering wheel, which turns the axle connected to the wheels, and a rolling pin, where the cylindrical body acts as the wheel, and the rod through the center serves as the axle.