I only have one "real" ghost story, and it comes from when I was in the fifth grade. My grandfather had just died after a long bout with tuberculosis, and we were at their house for his wake and funeral. At this point in my life, I was at the tail end of having my braces and a retainer, so of course, I was very much focused on keeping track of the darn thing. The night after his funeral, as I was getting ready for bed, I realized that I had misplaced my bedtime retainer, and I searched through the whole house, finding nothing. I went to sleep, annoyed on top of dealing with the grief of losing Grandpa, and I remember thinking to myself that I bet Grandpa would have been able to find it, as he knew the house better than anyone.
The next morning, I went downstairs early, before anyone else had gotten up, and I found my retainer, sitting in its case and set dead-center in the middle of the kitchen table. Of course, I was thrilled, and after people got up, I asked around for who had found it so I could thank them. Everyone in the house swore up and down that they hadn't found it, let alone put it on the table. I believe to this day that it was my Grandpa giving me one last bit of help before he went off to the afterlife, and whenever I go there, I still swear I can feel his presence in the house. A couple of times, walking through the living room, I caught a glimpse of him sitting in his favorite recliner, but when I turned to look, no one was there.
I've been fascinated with the paranormal ever since then, and I definitely think there's something to the idea of people leaving energy in places they loved after they've died.