I'll share a couple of creepy things that have happened to me. When I was a teenager I seemed to attract creepy people...
I remember clearly one afternoon spent alone at home, at the age of about 15, in daylight hours, and I heard a noise and saw a man in house downstairs. I crept to our backdoor where we kept a cricket bat, and followed the man through the living room, up the stairs, and into the main bedroom. He disappeared into thin air. There was nowhere for the man to go! The windows were shut, too.
One early summer evening we were driving through the countryside with family friends, and I think we had mixed and matched families in the cars as I was sitting in the family friend's car and we were chatting about random things. We began talking about ordinary things we'd never seen or done before, and I suddenly said "I've never ever seen a scarecrow in all the times we've lived and walked in the countryside." Within 5 minutes of saying that, we drove through a village which had a scarecrow festival on, and I shit you not, we probably saw about 150 of the damn things. Everyone just gawped at me a bit - as if I'd known that was going to happen!
I've been followed a few times before, which is always a creepy experience. You can sort of feel the eyes burning in the back of you, and become conscious of someone matching their footsteps to yours. One culminated in an attack. Others post the attack, I ran away from, and one, I detoured a long way to avoid the tramp learning where I lived (this fella actually told me he was following me!).
I once lived in an old, rundown house that had been rented to a group of us fully furnished. Well, not only was it fully furnished, the cupboards were full of their belongings too. To the brim - full of books, clothes, papers, personal letters, certificates, official papers, crockery, ornaments. When we arrived to move in, it was as if time had stood still in 1970, with the peeling 70s style wallpaper and decor, and all the ancient belongings. This house also stood opposite a graveyard. I'm sure it was a housemate being annoying, but he used to swear blind that he wasn't walking up and down the corridor outside my bedroom door, on the hour, every few nights. They were definite footsteps, plodding, quite purposefully. I also used to see lights circling in the sky regularly, for hours at a time. It was just odd all around. No government warnings of test flights or anything like that - which we did used to get notification of when living in another area. My mobile phones used to play up a lot; I had two mobiles with different PAYG tarifs so I could call different friends cheaply. One of my mobiles used to ring randomly, with no number, and no person on the other end. It would just click off. My second mobile rang, and I went to pick it up - it was my first number ringing my second number! But how could that be - because it was in my bag. I grabbed my bag to check my first phone, and the battery was completely dead - there was no way it was a mis-dial. It was utterly bizarre.