“Heart of a Dying Ship.” Ever since Cycles came out I’ve hardly used the Blender internal renderer, but since Cycles doesn’t yet have volumetrics, here we are. For the background I subdivided a cube several times and gave it a red halo material (making all those red dots). Then I created a honeycomb matrix, extruded it, and gave it a volumetric material with some colored lights scattered around inside. The torus knot also has a volumetric material, and the white energy core in the center is just a sphere with a white emitting light. Finally, in post I dialed up the chromatic aberration and lens distortion, which ended up creating the rainbow effect around the edges.