This absolutely blew my mind when I saw it!
You can actually MUTE your microwave! Yep, you read that right. You can change the settings on your microwave so it doesn't make any noise and it's really pretty simple. All you have to do is hold down the "2" on the microwave, wait for it to beep, then put in the time for the thing you're cooking, and click start (some even have a button that's specifically labeled for this function and you just have to look for it).
Watch how it's done below.