Imagine Microblades: standard Android phone form factor slide in servers.

Building a home lab k8s cluster by buying something similar to a phone.you could go to a website say if you want a display or not, how much storage and than you have a flat server you just slide into your case.

Then a few years later you buy a stronger one and replace it while the old one is used by someone else.

Like how a Nas manages your disks, k8s could manage your Microblades.

Cheap ha with Autoupgrade capabilities.

I could also start using the outdated Microblades for offshoring when I keep them running at my parents place.

The enclosed could also provide networking and perhaps a 13" slide out display with a display selector.