I have only had time this week for a tiny personal project. And that project was to use my NAS as a data persistence layer for at least some of the apps running in my K8s cluster. It was surprisingly easy.
The setup required tinkering with nodes and K8s manifests, but it all went very smoothly. So now I have my Minecraft server storing all the data on my NAS via NFS, so even if my lab's hardware fails, the data will not be lost. And as I'm running backups on the NAS itself, I can protect the data even more.
There is a tiny latency tradeoff. I did notice a bit of a lag in Minecraft, as it has to read and write files a lot. But because all connections are wired and the lab and NAS are on the same switch, it has not been a problem so far. If it becomes worse, I can always revert back to local storage just for one app.