Ben 
I know this is a deviation from my normal posts but I had to say something because I enjoyed this exciting project.
I used a raspberry pi to host a WordPress website on my local network. Granted, this would have been a better announcement if the website was available everywhere, but I just wanted to set up a headless installation of Ubuntu on Raspberry pi, SSH in from one of my other computers and host a website on the pi.
To be honest, technologically this was nothing special I suppose because it was not a complex website but the site I made was not a complex site, but this was an interesting project.