This is pretty OT, but I saw that OpenBSD does support some USB graphics adapters -- cf. udl(4) <http://www.openbsd.org/cgi-bin/man.cgi?query=udl>.
So IFF any of these plug computers got to run OpenBSD, then one could jack a USB hub into that plug computer, connect a USB keyboard and mouse, and connect an OpenBSD-compatible USB graphics adapter and display. This would yield a very small and low power (in every sense) OpenBSD desktop computer and/or secondary computing terminal, several of which could be very easily installed in various places around the house and/or workplace. If you combined this with a PLC/HomePlug (cf. <http://en.wikipedia.org/wiki/Powerline_communication>, <http://en.wikipedia.org/wiki/HomePlug>), you'd only need a triple mains outlet for a net-connected terminal (plug PC+HomePlug+monitor), and if the plug computer has Wifi, you'd only need a double outlet (plug PC+monitor). Of course all of this won't make much sense if there indeed still are serious reliability problems as others have suggested in this thread. --ropers