Once I've got bare metal, I'd consider what my OS options are and check for upgrades. I might even be able to run Windows 11!
Then, I'd check the cybersecurity policies in place, probably VM inside a VM just for fun.
After that, I'd probably get to some light evening reading over the entire works of that Bill Shakspeare guy who keeps getting ripped off.
Being connected to a supercomputer solves exactly zero of my needs, wants, or desires.