You know what, that is a great idea for a project of mine, where I want to display outside temp and weather forecast in the hallway next to the wardrobe. I have been musing about it for a while now: how to make it small and not stand out, how to handle power delivery, etc.
I was already leaning towards eink, and if I can get one of these price tags cheap plus hide an IR blaster in a corner that would be ideal. All controlled by Home Assistant of course. I'm going to search the usual Chinese online marketplaces tomorrow.
Thank you!