A very good good quality dslr camera
Use the very best video camera you can find, ideally digital having a flash. This tends to make the analysis practice a lot simpler. A digicam would be the single most valuable piece of ghost hunting supplies. You can get some points for example orbs that the naked eye just can't see, cameras will deliver the proof.
A robust torch
Should you be conducting your ghost hunt at night (like most people tend to accomplish) then consistently take a strong torch with you, primarily in case your dslr camera doesn't have a flash.
A picture video camera
A powerful torch
If you're conducting your ghost hunt at evening (like most people tend to do) then usually take a strong torch with you, certainly in case your photographic camera does not have a flash.
A video clip digital camera