Mount for a SPST Snap in Rocker Switch (e.g. this one from Amazon) and a Mini USB B 5 PIN Male to Female Extension Data Cable Adapter Joiner Coupler Cord (e.g. this one from eBay) on 20mm aluminum extrusion. This enclosure fully encloses the switch, and has a provision for the cables to exit the mount body.

OpenSCAD design is parameterized so that adjustments can be made to accommodate other designs/models of switches.