Creating no-code MVP, looking for use cases

I'm taking a swing at the no-code thing, played a little with Bubble.

I decided on building a reminder app - you select a date and time, add a message and you get a reminder via email (will add SMS, browser notification, WhatsApp) when time's due. Or you can send it to someone else if you want.

While I do have some use cases in mind, I would like to find out how other people would use such an app so I could add the features.

The big question - what reminders do YOU need?

The app will be free to use once it's done :) So if you add your use case here, hopefully, I'll help you solve your issue.