I prototyped a mute/unmute button called M-Button for all virtual calls. M-Button is a small button that plugs into a USB port on your laptop. When tapped, it triggers the M-Button app to mute or unmute yourself in any meeting program. The M-Button app shows a tray icon to indicate if you are muted/unmuted. It mutes and unmutes your microphone at operating system level.
AMA.
Kickstarter link: https://www.kickstarter.com/projects/emacsnw/m-button-mute-u...