Simple enclosure for “Toggle Rocker Switch Panel, 5 Gang 12V Waterproof Round Toggle ON/OFF Switch Blue LED Fit for Auto Automotive Lights Car Marine Boat Yacht Trailer Caravan Camper Bus Tractor Truck Vehicles” e.g. https://amzn.eu/d/c4tHEZP

These switch panels are marketed for various situations but I don't think they are particularly waterproof, they are however useful as switches in my garage - in this scenario controlling the 12V supply to some radio equipment.

2 bolt holes on the side to allow you to secure it in place, these could be moved to other parts if you wanted to orientate it differently (see scad file).

Large holes at the back to allow for wires to come in and out, in my installation I used Wago lever connectors.

Printed in PLA (Creality Ender 3 v3 SE, 10% infil