I personally do not believe in ouiji boards, however, I do believe that Satan is in a fight for all good souls and just maybe he might use any tools to get us; I agree in the end is God's Will and maybe God likes us to learn a good lesson at times. Remember, God gave us free will and we should think to ourselves is this good and harmless to play with?
Anything to do we the other world and future things, I personally believe is not good to play with even if it's a harmless joke or fun to do at night (midnight) with friends at a University.
My personal experiences tells me a big fat NO!
So for all sake, do not play with anything that is beyond our realm and understanding even if you think it is harmless.
Thanks for letting me put my personal opinion.