Lutron LED+ Black Plug-in Dimmer in the Lamp & Light Controls department at Lowes.com
DEWENWILS Table Lamp Dimmer Switch for Dimmable LED/CFL Lights and Incandescent Bulbs, Full Range Slide Control, 6.6 ft Extension Cord, UL Listed, White - - Amazon.com
Lutron White Finish 300 Watt Plug-In Lamp Dimmer - #19049 | Lamps Plus