My earliest childhood memory, toddler age: I had a couple of those large juice cans that were common in the early 70s tied together with string so we could pretend they were oxygen for either scuba or outer space. They were hanging from my crib, and started shaking and clanging (we did not live somewhere earthquake prone*). While I remember it as unexplainable, I could never bring myself to believe it was supernatural. I always wondered if memory formation at that age has glitches.
I had a girlfriend once who was freaked out by hearing a relative call out her name in the middle of the night and was convinced it was a supernatural ghost type thing. I was ambivalent at the time but I have since experienced this kind of auditory hallucination myself so calling bullshit on that one.
(*though we did still experience sonic booms at the time?)