Maybe not the interesting, but the most recent— I was annoyed that Bloomberg’s email newsletters didn’t have an associated RSS feed, so I wrote a script that uses JMAP to take the most recent emails from them from my inbox and publish to an rss file. A docker container hosts that running on a cron job, and nginx to serve.
I run it on my NAS so my RSS reader can find it as long as I’m on VPN. Now I only need to visit NetNewsWire for all my news!