Summary

This: http://www.thingiverse.com/thing:47956

This: http://www.thingiverse.com/thing:472463
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CATPLATE!

Instructions

I printed this in PLA (some no-name pla I got from MassDrop). The switch plate bottom is concave, so you have to print support. I use Kisslicer which allows me to turn off support after a certain height or disable it at a incline degree. The upper part does not require support in my custom delta (which doesn't bridge well to begin with).
I included the fangs(?) as well in case they remove the source. Just print both at 1:1 scale and you're all set.
The skull's nasal cavity (?) works great to allow upper screw access. Otherwise some push-fit solution would have worked.

CATPLATE