[quote=@Prince of Seraphs]
What's a good symbol for a ghost or apparition? I feel like the skull is close but doesn't really have the right imagery.
[/quote]

[url=https://www.youtube.com/watch?v=m9We2XsVZfc][img]http://vignette3.wikia.nocookie.net/ghostbusters/images/f/f5/IconGhostbio.png/revision/latest?cb=20111124063957[/img][/url]

or 

[url=https://www.youtube.com/watch?v=xA8Jn-mMfk4][img]https://res.cloudinary.com/teepublic/image/private/s--Es1V2yPW--/t_Preview/b_rgb:191919,c_limit,f_jpg,h_630,q_90,w_630/v1457663886/production/designs/443642_1.jpg[/img][/url]