We used some 3D printed mounts this past season, but mostly for weight reasons.
http://www.thingiverse.com/thing:1494829
We also had a status light mount, but it broke a few times on Einstein and I plan to redesign it for the next season. (you can see the duct tape in the third picture on Thingiverse)
With a recent donation of several printers, we'll probably have a lot more 3D printed space/weight saving solutions in the coming season.