Yeah, I've been listening to the Ghostbusters theme-song again. How did you know? But anyway, it gave me an idea I've been thinking about for a while. Basically a few people get a bit too inspired by Ghostbusters and want to start their own ghostbusting. In short, this results in a story inspired by the Ghostbusters-movies, but it's much darker and more mature. The ghosts will be scary, and people will die. Even some of the Ghostbusters. But anyway,the Ghostbusters will have big weapons and stuff like that, and some of their equipment will attract the ghosts. This is partly to make the ghosts easier to destroy (why bother trap them?), and part to keep them away from the civilians. Of course, it also means the ghosts will be much more dangerous and attack in greater numbers, but no one said the job would be easy. The question is how to attract the ghosts. Sound? Pheromones? Ectoplasma? Smell? Anyone have any ideas? It should fit in the equipment, so not be too big, yet not too small either. It would be even better if they could adjust the strength, so they don't attract all the ghosts in the city at once.