I've attached the Pi Camera, along with an extended cable for it (https://www.adafruit.com/products/1648), a custom accessory arm I designed to mount the same way the filament spool holder does (http://www.thingiverse.com/thing:965634) and a slightly modified version of an existing Pi camera mount to attach on to the end of the arm (http://www.thingiverse.com/thing:964961).
Setup

Pi and Power

Mounting and USB

Arm and Camera

Next up is waiting for my 1.75mm conversion kit to arrive, where I'll be taking most of the printer apart and trying make some assembly adjustments now that I've got more experience using it and understanding how it works. Mainly a better job wiring. Some of my steppers came with way too much wire attached and they could use some shortening to clean up the electronics enclosure. After that, a better method of bed levelling and adding a power switch to my power supply as it seems the newly shipped ones have.
Here's my post showing some things I've printed and timelapses I've made with this setup viewtopic.php?f=15&t=168