My use case is a homelab kubernetes cluster, so I want multiple nodes for redundancy, but I don’t want to use too much electricity or generate too much heat. But for the sake of other readers, let’s keep it general:
What’s a nice little computer for a homelab, with its own power supply, ethernet, and room for 2 internal disks?
Refurbished Lenovo Tiny, HP micro or Lenovo mini are the go to things for this. Available in plenty different configurations, modular and widely available due to getting decommissioned by the industry in big numbers after 2-3 years.
They idle around 6-7W
Here is a good comparison list of all the different Tinys out there.