Ed Gein's cauldron
A cauldron that Zak Bagans' The Haunted Museum in Las Vegas lists among its exhibits, calling it cursed and linking it to Ed Gein.
Ed Gein was a convicted killer. Wikipedia records that he was first judged unfit for trial and held in a facility for mental health care. He was ruled competent by 1968. He was then found guilty of the murder of a victim named Worden, found legally insane, and committed to a psychiatric institution.
The Haunted Museum, Zak Bagans' museum in Las Vegas, lists among its exhibits a cauldron it calls cursed and ties to Ed Gein, alongside the Death Van of Jack Kevorkian, a rocking chair tied to the film The Conjuring 3, Peggy the Doll and the Dybbuk Box. Wikipedia's episode list for the series Deadly Possessions describes an episode in which Zak acquires a cauldron the show ties to a serial killer; the same episode covers two paintings linked to a run of house fires. None of the sources says how the cauldron came to Bagans or who owned it before.
"Zak acquires a cauldron once used by an infamous serial killer to cook human body parts. Then, he risks setting the museum ablaze when he investigates two paintings connected to a string of mysterious house fires."
- Zak Bagans' The Haunted Museum, Zak Bagans' The Haunted Museum, Las Vegas
- Ed Gein, Wikipedia