I don't have a homelab, but I have an old mac mini (that I put Debian on) as an always-on file server and other self-hosted software. I also have a 1L office pc as my main desktop (freebsd) with a couple of dev VMs (alpine linux). Both draw very little power, which is important for me as I'm on solar.

I have an M1 Mini which is more powerful than any of these, but MacOS is not really suitable for tinkering and anything that's not Apple(TM).