You can mute and unmute your Microphone directly from menubar or use option + space key to toggle your microphone. You can also use push-to-talk mode to temporarily unmute yourself. Mutify works with Zoom, Hangout, Slack, Skype, GoToMeeting, Webex, Telegram, Viber, FB Messanger etc.
Don't let your Mac sleep when lid is closed. Play music, Airplay videos and use Mac with external monitors with the lid closed. Best way to keep your Mac awake.
Menu bar Launcher
Last Tab for Safari
Voice Recordings - For Teams