I was younger when this happened, so it's been a good while. I apologize in advance if I get any details wrong or don't quite remember some.
This took place in Portsmouth, New Hampshire. Just a quick google search will show you that this place is old.
It was around evening. My Mother was making dinner in the kitchen, and I was playing Minecraft whilst my younger brother watched. I had suddenly felt a cold hand being placed on my shoulder, then another hand traveling up the back of my neck, lightly touching the back of my hair. I whipped around to see who it was, but no one was there. I then asked my younger brother if he did it, but I knew his arm wasn't long enough to reach around our desk chair like that, and the hands were too big to be his.
Our house was newer than other houses in the area but still older definitely and creepy, so it wasn't the first time that something that could be labeled as paranormal had happened, it was just the first, and last time I had been physically touched by the ghost here.
I would see shadow figures on the walls, feel as though I was being watched and simple things being moved or falling. It was especially prominent in the basement, which makes me think that maybe our house had been built over something. Though, this ghost never seemed unfriendly. They had never tormented us, just did little things to get our attention.
If I'm being honest, it felt more like this ghost was watching out for us. I never felt like I was in danger when in their presence, just more not understanding what was happening.
If you're willing, let me know your thoughts in the comments. I'm genuinely curious as to what more experienced people have to say on this.