You can do it even cheaper with some painter's tape! For the mic, perhaps you could disable it by plugging in an unconnected trrs plug into the audio jack. I'm

You can do it even cheaper with some painter's tape! For the mic, perhaps you could disable it by plugging in an unconnected trrs plug into the audio jack. I'm not sure how low level the switching of the microphone source is when you do this, so maybe it's not a good method.