Unpopular opinion: the microwave popcorn button.

Try it. You know you want to.Referenced Videos:The Antique Microwave Oven that's Better than Yourshttps://youtu.be/UiS27feX8o0And the follow-up to that oneht...
I watched a while ago so I may misremember.
Cheap ones are just a timer that works for most common microwave popcorn packages.
Good ones detect the first popped kernel and then go for another 30s, as stated on most microwave popcorn packages