And cache

you can run tor on it

thats kinda true. (even excluding gemini lynx user like myself) comps and phones have reached overkill for most users. therefore sff is totally fine for most users.
truth is… only reason i dont have a bigger pc is that i want flexibility to move apt if my landlord raises rent. thats literally the only reason.
otherwise i would have dual socket, 8 sticks memory, full sized gpu, etc.
i dont mind not having all that. although, it could be used for something… currently it would be used for nothing.

i dont think alot of ppl need a super small comp. it comes with disadvantages. harder or more limited upgrades.

my guess is: quadrennial lenovo usff/sff . the intel nuc is nice&easy to uprade the limited set of parts for ultra longterm use.

https://en.wikipedia.org/wiki/Direct_Rendering_Infrastructure
https://en.wikipedia.org/wiki/Linux_framebuffer
basically no, because all existing modern software requires either wayland and/or Xwayland(xorg)

https://en.wikipedia.org/wiki/Opentracker

https://tor.stackexchange.com/questions/64/how-can-bittorrent-traffic-be-anonymized-with-tor
proxy setting for tracker over tor network

sry. didnt read carefully.

nnn (tui file manager) would be an interesting solution. i know its not really perfect but you can interactively select and view files.

a router that supports openwrt. relatively new, affordable, good specs/features. non-bs model.

or a computer with NIC that supports AP mode.(if u know how to do that)

can u export the mail to file(s) ?