I made a data takeout tool for the SaaS kindergarten communication platform used by my child's daycare. On it's own the software is really simple and could have been a few hundred lines of Python, but at some point I changed my mind and wanted to share this with other parents in case they find it, the things that make a project fit for publishing took 95% of actual work since you want it general and robust enough someone non-technical can use it. I now fully understand someone's reluctance to publish tools they wrote for themselves because it takes a lot of work.

https://github.com/karolistamutis/kidsnoter