+1 to beelink but be careful of sketchy resellers. Their website has a direct link to their actual 1st party Amazon storefront that can be tricky to pin down.

I have a fleet of 5 n100/n150 beelinks running k8s that works perfectly well for a super low power homelab. I also replaced the stock m.2 ssds with patriot low power ones but I don’t think the juice is worth the squeeze on that with current pricing.

My UPS has a custom built NAS (low tdp ryzen pro and 4 spinny disks), switch, firewall, 3 mini PCs, raspberry pi) plugged into it that are all under decent load and it reports 80W draw. It’s honestly incredible how far computers have come and how we’re living in an age of apartment sized homeland.