Urchin is a film and animation studio that recently produced
a short animation celebrating the thirtieth anniversary of the Free Software Foundation, steward of the GNU project.
Perhaps more interestingly, the creators of the video have provided
this "making of" blogpost describing how they used Blender, Krita, and other Free Software tools to produce the animation. All resources used in the video are Creative Commons licensed and all software used (including the customized scripts) is available under a Free Software license.