I have IOT lights that I don't want to be toggled by the standard light switches. I printed these to protect against accidental presses, while also providing a convenient place to stick IOT buttons that are meant to be pressed for the lights.

I designed them to be easy to print, while also allowing for easy access to the underlying switch when needed – the cover can just be slid off from the four corner mounting hooks. 

While you could probably slice the four corner hooks to be a friction fit, I chose to use a little glue to hold them in place.