The 'Haunt' Project

If you want to move beyond the kid's stuff you have to try something a little crazier than that, and perhaps do something like what Professor Chris French and his team at the Anomalistic Psychology Research Unit at Goldsmiths College in the UK did: they built a room and saturated various parts of it with electromagnetic fields and infrasound - which are both suspected by some researchers as being correlated with reports of hauntings and paranormal experiences.