I spend a couple of hours last night trying to set up Site.js on a Raspberry pi, I got it working locally, but fell at the https cert and I think my firewall.

Looks fascinating as does Small Technology Foundation Personal Web Prototype-01: a mobile personal web server which is a portable server you can carry about in your pocket. Put together from a pi and some bits I wish I could afford to buy the bits for that. Reminds me a wee bit of the piratebox.