Does the Chicagoland area have any of these types of events?

There used to be one on Halloweens (never made it myself), but I believe the host said last year's was the final one they were putting together.  I've thought about trying to put something together, but it seems like a pretty sizeable endeavor, and I'm buried with regular work currently.  Would love to attend if someone can put something together before I get to it.