oiuja boards are a scary reality... especially that they are being sold in retail stores everywhere, and that young kids have access to them to "play with" at parties. kids playing with a direct 'telephone' to demons while thinking that they are talking with their dead grannie is quite scary.
in our culture, it seems that belief in ghosts is encouraged, but belief in demons is looked down upon. but they are there; sadly, we are just taught that the 'scary things' that happen are caused by ghosts and the like, and laugh off any suggestions of demons. in the book "The Screwtape Letters," by C.S. Lewis, 'Screwtape' says something along the lines that not believing that demons exist is worse than believing that they do, that not believing in demons doesn't stop them from doing what demons do... it only enables them to move more freely.
when i was younger, i used to read a lot of those creepy "ghost stories for kids." (they are in reality quite frightening and gory, with equally scary illustrations, and i would not recommend them for actual kids, or for anyone who gets wigged out as quickly and badly as i do
) one of the books had a description of how to do "bloody mary" in it - "you stood in front of a mirror in a dark room, with all doors and windows shut, blinds pulled down, and stuff like that; then, before the mirror, you say the words "bloody mary" thirty or forty times, and a ghost should appear; according to the book, different ghosts would appear, but you had to be careful, because some of them may be "angry spirits" and try to attack you, so you should have the light switch in close reach, since light would banish them." thankfully, i never tried it myself, and have no desire to - i don't want to invite 'something that could attack me' into my bathroom mirror... just for a thrill.