Here we see the Dancing Ghost Ring at night. I use a flicker circuit which makes a red and yellow light bulb flicker as if there were a fire.

I also have a small MP3 player with an eerie version of "Ring-Around the Rosie" playing. 

Here is a flash picture of the same effect.

My wife made this prop using sheets, wooden stakes and the heads are just plastic bags stuffed with newspapers, covered by the sheets with magic marker eyes.