OOS for a week - want to be productive - looking for suggestions

I’m laid up for an entire week. I want to pick up on a skill while I’m out for work.

I have a couple of proxmox boxes downstairs I can easily spin up some CentOS VMs.

I was planning on building some bs rails app. I’m noticing being able to quickly build an app backed by a DB would be useful at my organization. Plus, I like the ruby language.

I’ve built full stack LAMP(hp) apps, previously. I think rails might allow me to build apps quicker.

Lastly I was considering running through mounting networked partitions (think LUNS) to Linux VMs.

Any thoughts ideas etc.