Max

I use bitwaarden and stratum since it has a wearos app as well and it’s nice to use that for 2fa codes

Why shutdown the homelab in the first place? Are you trying to save on power consumption?

The other idea I had was to use another lower power device spoofing the server’s Mac. But it seems like it would require an ethernet hub and those don’t really exist anymore.

If you’re okay programming, something like fenics or moose probably does what you need! There are GUI viewers for the results, but the equations and model setup are defined with code (usually python). You would import your mesh/cad generated with another tool