Looking for a lightweight sliding alert/reminder system for Windows

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Is there any easy alert/reminder/’task management’ tool where I’ll simply type (or paste) some texts and select 30 minutes (from a drop down may be OR type in a text box) so that the alert system will slide in from a corner of the screen after 30 minutes.

There should be option to:
a) snooze,
b) complete/done.

I don’t want advanced feature like select date, select time, priority, etc. it should be very simple.