Check out this hand made distortion feedback microphone with an arcade push to talk function. It’s called a Dr Moonstien. I can see this being used at many a live show around 3AM. It’s available on eBay (link).
“This is a hand built noise machine built by me. it is a push to talk mic with very cool arcade style big red button. you can mix your very overdrive mic preamp with 3 extremely nasty octave modulators. this is the ultimate noise crust mic kind of a death metal version of a vocoder can be used as a feedback machine. this is good noise machine for the person that is more into destructive tambor than clarity. great way to juice up those vocals or control feedback to do your evil bidding. runs on 9v battery has 1/4 inch audio out has regular volume knob and 3 volume knobs for the different octaves of crust. on off power toggle blue led.” – drmoonstien
For more info: ebay.com/itm/hand-built-noise-push-to-talk-noise-microphone