Check out ServeTheHome’s “Project TinyMiniMicro” on Youtube for a great overview of ultra-small form factor (“1 liter”) business PCs.

The big three PC makers each have standardized products in this form factor with (relatively speaking, compared to smaller manufacturers) tons of spare parts available.

Go with used & refurb business PCs right out of the gate instead of fucking around with SBCs like the Pi.

Go with “1-liter” aka Ultra Small Form Factor right away instead of starting with SFF. (I don’t have a permanent residence at the moment so this makes sense for me)