things or gadgets

I'm making a story and I need gadgets or things that may find spirits or attract paranormal activity, its for a story. Name or list some, thanks! & if any of you guys know the name to a gadget that can translate what a ghost says into english, i saw it on a show, don't know what it's called, if...

For example, there is an analog clock then there is a digital clock. There is an analog tuner of a radio and there is a digital one.

For example, there is an analog clock then there is a digital clock. There is an analog tuner of a radio and there is a digital one.