Free spirits living among us. If I were you I wouldn't look back now!

Developed using Hydra + Coffee.

Features:
~ Ghost Shape: 3 to 100 (higher -> rounder)
~ Ghost Speed: 0.5 to 1.0 (higher -> faster movements)
~ Rotation Angle: 15 to 360 (higher -> higher revs)
~ Rotation Speed: 0.1 to 0.6 (higher -> rotates faster)
~ Time acelerator: 0.01 to 0.03 (the higher -> changes itself faster)

INTERATIVE! -> Horizontal mouse position controls rotation.

[Go to Live View window ("open live") and press 's' to save a PNG from your canvas]

Credits to @bernizeck and @AlexandreRangel for some code hints!