I have an old Acer C720 that's been happily running Linux for about a decade now. Very under powered (2 gb ram model) so I have to keep the distro lightweight. Bought it refurb for $150 -- what a great deal that was!
I like it enough that I've looked into a newer chromebook with a bit more RAM, and I was disappointed to learn that most of the newer models apparently can't be rooted like this.
I did some years ago install Linux on a Chromebook. I didn't do much of anything with it, but then I didn't do much of anything with the Chromebook at all.