Twisty Vase
This was made using the same script as my pencil holder (http://www.thingiverse.com/thing:928184).
The STL came out with some errors that I tried to clean up with netfabb, but there were still a few messy bits as you can see in the last photo. These were pretty easy to clean off with a sharp knife.
I did try to find the problem with the script, but it wouldn't show up for simple objects and at 9+ hours to render, trial and error is pretty slow going...