What is an example of a possessed object?

I own one! It's an old, antique hand mirror that my adopted grandma gave to me. It belonged to her own grandma. It's old and a bit dirty, but the mirror part has remained whole and uncracked. It's not really possessed, more just haunted. Sometimes, when I look in the mirror, I can see a woman standing somewhere behind me. She only appears in the hand mirror, though. Not in any other mirrors.