I like to see pictures or videos I shared on Facebook 1, 2, or 5 years ago today. It is a great reminder to you where were you at that time and what you were doing it. I think it will be a good browser extension or app to remind you of who you had a zoom call or in-person meeting one or 2 years ago today. You can connect your calendar and it will remind you automatically every day/week/month based on your frequency settings.
Not all the time we are taking a picture or posting on social media publicly. But, our calendar is storing those events anyway. It will be a good product. Maybe it’s something already out there.