I'll admit right away that I am breaking the first guideline of submitting a story on this site but this is something that I want to share. There was this neighbor who would come over often to talk to my mom (actually, my mom would mostly listen). She was an old lady, probably in her late 70's. She was Cuban and she was a Santera (priestess of santeria). People would hire her for spells and this sort of thing. She told us once of an apartment that she lived in where the previous tenant had committed suicide in the bathtub (actually it was rumored that he was murdered by his wife for his will money). She would do her rituals and spells in the apartment and it was possible that this disturbed Bill (the man who supposedly committed suicide) somehow. She said that he would appear next to her bed, giving her a cold stare. Sometimes he would yell and be real angry. Once, she said, when she was cooking that Bill appeared and grabbed her by the neck and tossed her on the bed and tried to rape her. Fed up by this, she moved. The apartment is now occupied by my aunt who has mentioned before feeling Bill's presence.
Another story I remember her saying (apart from her numerous claims that she had an affair with Fidel Castro in Cuba) was the time when a small elf-like entity stole her medical insurance card. She said it was morning and she woke up and lit a cigar and laid it in front of a statue of Saint Lazarus as an offering of gratitude. She changed for her doctor's appointment and when she looked for her card in the drawer she saw a tiny man run from behind a mirror with the card in his arms. He jumped down and she chased him into the kitchen but the little man got away. She actually never found the card and had to order a new one.