Two spring to mind, first one woo the second just WT actual F.
I’ve told this before on here, but it still really plays on my mind. My husband and I stayed at a premises in Lyme Regis, the entrance to it was through a gated little courtyard and then through it’s French doors. We were told that sometimes the neighbour used this courtyard to access a part of their property, so were expecting potentially see someone at some point.
On the first night we were sat in the kitchen, me opposite the French doors on a sofa, my husband perched on the kitchen surface. We decided to put some music on and open a bottle of bubbly we had been gifted. Whilst we were sipping our first glass, a face appeared at the door. I immediately thought “that’s the neighbour, maybe the music is too loud” and acknowledged them with a little wave and got up to open the door. Except the door opened itself before I got there. I went to speak but there was no one there. My husband who has watched the whole thing freaked out. I ran into the courtyard, no sign of anyone, and no time for them to have gone anywhere. I rang my mum, I was so confused. She just thought we were drunk and hysterical. But we weren’t. Although my husband proceeded to down his drinks after that!
We stayed in the property for a week, and didn’t see the neighbour once. So we assumed they were away. Nothing else happened until the last night when we were in bed, door shut, with the dog and from outside the room, in the kitchen the dogs squeaky toy pig “oinks” then we hear it drop the floor.
We’re not people who generally believed in ghosts, but we have never been able to explain this and no really believes us.
The second one was when I used to run my old business we had a small quiet car park round the back. One day I was walking through when I heard voices singing “Dreaming of You” by The Coral. Perfectly harmonising, really brilliant. I looked around to locate where it was coming from and it was 5 of our local teen troublemakers all in there trackies, no one watching them. Just having a sing, and they were REALLY good. I used to live next door to one of them and, although you shouldn’t judge a book, I was not expecting to ever witness this. He had actually been quite vile and intimidating in previous experience, so I tried not to make eye contact and scuttled away.