This!
my first homelab was a couple of RPIs (OG gen) running Home autmation and NAS duties.
Over the years, a lot has changed - the hardware, the architecture and the topology (Currently a 10th gen intel with 48Gigs of RAM running 4 VMs and 5 containers)
But one thing that remained unchanged is that the homelab machine(s) always have had only two cables: Power and ethernet.. nothing more, nothing less…
They have always sat in forlorn corner, typically inside a closet - and I have never tried to use them for anything else but backend duties
I probably wouldnt even call it a lab anymore - if i take it down (or reboots for that matter), my family would start screaming at me within minutes
Any kind of experimentation (or even upgrades) with it are reserved for when the rest of the house is sleeping