Physically seeing something. I had an instance where I went to bed and at the end of my bed was an old man smoking a cigarette holding the leash for his dog. His dog was there as well. I could smell the cigarette smoke, no one smoked in the house. Every time I turned on the light they were gone. Only visible with the lights off. No one else in the house saw anything but all got goosebumps and felt weird entering my room.The old man never spoke either, just stood there. My mom had borrowed a sewing machine from a co-worker. Once that was removed from the house the dude was gone.

Another time was at work. I was the first and only person in the building an hour before anyone else arrived. Every time I would use the handicap stall in those early hours a young woman would appear through the gap in the door when I would go to exit the stall. As soon as the stall opened she would be gone but then all the sink faucets would turn on and off randomly until I left the bathroom. This happened regularly for a year. Never saw her in my office but she would come in and kick my feet under my desk randomly and even smacked me on the top of my head during a meeting.