[dflock]

Android has been able to do this for years - here's video with details of someone using an android phone as a desktop replacement - with an external monitor and keyboard, etc...:

https://www.youtube.com/watch?v=bB-icTl2J-c

Also, ChromeOS is a functional replacement for Windows + Office: ChromeOS + Google Docs. It comes on hardware (ChromeBooks or ChromeBoxes) which are very cheap but capable, because ChromeOS is very lightweight. These devices are on par, cost wise, with a Windows Terminal - and require even less IT dept. effort to maintain.

[O____________O]

Interesting video. It looks like the Chromecast can be used to mirror an Android phone's display, which might help with the HDMI vs USB connectivity trade-off.

https://support.google.com/chromecast/answer/6059461?hl=en

It also appears that Synergy allows you to control an Android phone using your PC mouse and keyboard (requires rooting).

http://synergyandroid.sourceforge.net/ (looks like it's in early development)

So, with a Chromecast and Synergy, it may be possible to use a spare screen and your existing keyboard/mouse setup, keeping all your personal email and browsing off your work machine. And you'd only have to plug in USB for power.