Inline Lamp Switch 2 Pack, Full Range Rotary Dimmer Switch, Black Cord Switch Replacement for Table Lamp, Floor Lamp, Pendant Light, Works with Dimmable LED, Incandescent, Halogen Bulbs: Amazon.com: Tools & Home
Lutron Rotary Incandescent Single-pole Rotary Light Dimmer Switch, White in the Light Dimmers department at Lowes.com