Would a Samsung Chromebook be a suitable choice to run the offline wallet??? I read that Chromebooks run a Unix based OS. (I would obviously disable networking, bluetooth etc.)
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It seems possible but a bit of a hassle to install python (required for Electrum).
Alternatively there seems to be a Chrome plugin to get a shell.
Thus, if you already have the Chromebook it is a viable choice. Otherwise I would suggest a cheap system which allows more freedom out of the box.