The FluentPet pet buttons use a rubber pad to hold the buttons, but our cat liked to chew on the rubber pad. Without the rubber pads, the buttons get pushed around, confusing the cat 

These button holders interconnect and have a notch on the bottom for the recording switch. Print the button upside down to give the top a nice texture and eliminate the need for support in the switch notch. 

PLA works great, 15% infill makes a strong, cat proof and heavy holder.

I added a hex version that matches the spacing of the original FluentPet pads.