A lot of Chromebooks can have Linux natively put on them.
I see a lot of pooh-poohing of the idea in this thread, but I think there’s people who are willing to do so.
I just took an old Lenovo ThinkCentre Chromebox 10H5 and modified the UEFI firmware with the walkthru from MrChromebox to put Xubuntu on it. It’s actually pretty snappy despite its limited hardware.
Also, I upgraded the 16gb M.2 SSD into a far more sufficient 256gb size.
The shortage of RAM is rough, but it can still be a workhorse in a lot of ways. I plan on replacing Xubuntu with a server version to get a little boost out of running it headless to drop the RAM going to rendering a GUI.