I recently open source Dartosphere.org.
You can find the code github.com/grobmeier/dartosphere.org.
Certainly lots to do - it's back from 2012 or so... you know how things are. Your skills improve, but your old websites don't
The interesting part is, a planet software (I open source that as well soon) checks RSS feeds, then commits to a GIT repository. The Dartosphere is having that repository as a submodule and generates content from there. All on regular basis.
I write about that approach in my upcoming book on Jekyll. Feedback and questions are welcome - if you ask here, please ping me by my email (cg AT grobmeier DOT de) so I don't miss your thread!