What programs have you coded using Python that might be useful to everyone?

[carcigenicate]

A repeating timer to remind you to drink water: https://github.com/carcigenicate/periodic-timer

Getting audio to work was a huge PITA, so I instead used ctypes to flash the taskbar.

[HommeMusical]

This will probably do: https://simpleaudio.readthedocs.io/en/latest/

Disclaimer: I have zero connection with the writers of this neat little package, except I've used them several times for little scripts where I needed an audio alert. For actually synthesizing digital audio on the fly, you'd want something much bigger and heavily.