My mother is a Glioblastoma brain tumor cancer patient and is using an Optune device from Novocure as part of her treatment. She needed some way to prevent the power toggle switch on the bottom from accidentally being switched off, as well as providing some extra protection to device while it is in her backpack.

Printed in PETG at 0.2mm
 

This object was made in Tinkercad. Edit it online https://www.tinkercad.com/things/4FZ9c06hTSW