I created this box to house a Martin Jerry MJ-SD01 Dimmer Switch to control the lamps on my nightstand.

In addition to the printed part, and the switch I also used the following cable glands and extension cord:

• 10 Pcs 1/2" IP69K Strain Relief Nylon Cord Grip NPT Cable Glands Adjustable, UL Listed and RoHS Compliant (Grey)
• FIRMERST 1875W Flat Plug Extension Cord 10 Feet 14 AWG 15A White, UL Listed, Pack of 2