Here is a small switch case (28.5mm x 24.5mm x 20.5mm) that you can attach wherever you want :)
It's made for 2 pin interruptor (15mm x 21 mm) that you can find on ebay for example here.
If you plan to use high voltage current, please take care !
Consider gluing the top once the switch is in place and soldered !
Printed without difficulty, no support required !
Print time: 35' for case and 5' for top, 40' total :)