The NanoPi R6S. Build around an 8 core CPU. Passively cooled solid metal case. Completely silent. Sips electricity.
I sell custom configured small machines as the NanoPi R6S. The small selection of machines have good guarantees for long term software support. Tell me your requirements and I’ll find one that fits you well.
I’ve created a software setup which does not get in your way. It has no ads, and no AI. All the small machines I sell are set up like this. It is for all of you who are tired of companies forcing disservices upon you.

Debian GNU/Linux and Alpine Linux may be used as a stable base system.
Passkeys makes it easy to log into web services safely without ever using a password. Buy one from one of the suppliers out there, or from me.
Above: ESP32-S3 outside of its casing, running Pico Fido firmware
In contrast to web based interfaces, native interfaces are useful when one needs speed and snappy response. It is also essential when working offline to have everything accessible locally. I write dynamic software using an information driven approach - also labelled data driven design by some.
It’s also possible to run web services locally on your machine as long as they don’t rely on third parties for resources. Meediakaikkeus is written to not rely on third parties, so it runs just as fine locally without an internet connection.