I would buy a product version of this too, even though I have calendar notifications on 3+ devices.

I really like the aesthetics. There's something human about it -- it reminds me of Susan Kare's work on the original Macintosh [1]. There's so much soul and whimsy in what were nothing more than B&W pixeled icons. There's a certain timelessness to it. Another example: HyperCard's main screen [2].

Another Raspberry Pi digital display project I really like is this one [3], which mimics a train station display. The aesthetics is powerful here too because the fonts etc. reminds one of something familiar in the physical world.

[1] https://kare.com/apple-icons/

[2] https://blog.archive.org/wp-content/uploads/2017/08/MTIyMzI2...

[3] https://www.balena.io/blog/build-a-raspberry-pi-powered-trai...