The windows tablet could work if it's not the old windows RT that only allows windows store apps.
I would love beaker on chromeOS, but it's a lot of work to port it there and I'm not even sure it's possible. It would at a minimum be a rewrite of most the codebase since you can't use electron or node.js on chrome apps.
I heard some chromeos devices can now run desktop linux software without using the weird chroot trick so that might be an option, but it will be a bit of work and probably less supported by google.