A couple of years ago, back when I was at my grandparents, I got my braces off, and I was given a bag of sweets and a balloon (because balloons are awesome). I left the balloon around near the door and bed when I got home, and it was there on the ceiling until some time after dinner. I was on my computer doing whatever it was I was doing when I saw movement in the reflection. I looked to see the balloon was floating around, which I figured was from the helium wearing off (or escaping, whatever). But then it floated my way (the desk's right across from the door against the wall), and no matter how many times I put it back near my bed, furthest from the desk, it would come right back. I suppose the static was attracting it, but I decided to carry it around the house for a bit, which was rather nostalgic for my grandparents and I since I used to carry them around all the time as a kid. When I returned to my room, I left it near the door, and it stayed there the rest of the night, though I did move it near my desk before I went to bed.
This was around the time where I still left my door open at night, and my grandparents would be up for another thirty minutes to an hour after I would go to bed (depending on what my class schedule was for the term). Some nights I would sleep fine however I fell asleep, so I was content sleeping on my right side even though the door was open. I had my eyes closed for about a few minutes at most, when I just opened them for no apparent reason. For that one second, I saw a little girl at the side of my bed facing my direction suddenly turn and bolt out of the room, like she was startled.
According to my mom and grandmother (and yes, we are a religious family, so I guess there's slight bias here), they have this belief the house is built on some kind of roadway where the spirits travel to-and-fro often. Mom and sometimes Grandma have always told me stories of seeing glimpses of shadows over the years in the house, even those of pets, and Mom's room in particular was where my grandparents sleep now, with her bed near where the piano sits. Most of what Mom has seen or experienced was around there, and Grandma's computer room is directly across where she works on genealogy. Their room is just down the hall from the back room where I slept, have to pass the few feet consisting of the hall closet and the bathroom. I've always liked the idea of seeing spirits, so that moment wasn't a scary moment whatsoever, though it's always left me a little confused, albeit intrigued.