This is a minimal, 3D-printable frame for a 7.5" e-ink display, along with a website to control its content. The calendar form lets you upload a picture for each day.
For my frame, I made the website public and posted it on Reddit a few months ago. Since then, I start my workday by looking at an image a kind stranger decided to share for this particular day, which feels super wholesome.
Surprisingly, 95% of the images fall into the random/cute/fun category, only 5% were uploaded to somehow offend the viewer.
In case you want to build one yourself, here are all the instructions you need: https://github.com/jflessau/inkday
And this is the site to control what's displayed in the frame on my desk: https://inkday.jflessau.com/