A two edged spiralled 8 with spines and emitting vibration particles. It has a very steady equal vibration spraid, no pattern, in contrast to the non spiralled one below.
Note: The videos on YouTube aren't top quality,
so here are 2 links to download the files and play the animation yourself:
http://800million.org/8_spiral_spikes.blend.zip (6.7 Mb)
http://800million.org/8_NO_twist.blend.zip (2.2 Mb)
They are made with the OpenSource 3D software 'Blender' that you can download for free at: