This sounds exciting but also a bit scary @MissyPants and I 100% believe you. And I wonder what it is! The small children in my family, like my little brother when he was a baby (and I was 10,) and my niece and nephew, used to point at things in the room that weren't there. (Well, we grown ups/bigger kids and teens couldn't see them!)
My niece (when she was 3.5) said she saw 'nana' who died a week earlier and was pointing at the corner and smiling, even though we (adults) couldn't see anything! I have also seen cats staring at something we can't see, and hissing and running away.
I can recall (vividly) when I was about 4, seeing something/someone floating over my bed and moving around the room, and I hid my face under the bed covers. I was frozen with fear. My mum told me it was a dream. I know it wasn't.
I also have memories of floating down the stairs myself, (when I was 3-4,) but am not sure if this was a dream.
I have also experienced paranormal activity in a workplace I used to work at. It was a small office block (3 storeys high) that belonged to our employerr.. It was built on a site that used to be a place where they burned women at the stake who they accused of being witches.
I was alone in the building with one other woman, just me and her at 6pm one night. We were shutting down the computers and getting our coats and bags, and the light started flickering and going on and off, and a few pictures on the walls started shaking. We were like 
Then we heard a loud knocking on the wall on the other side of the office we were in. We knew there was no-one else in the building, and when I shot into the room where the knocking had come from, there was no-one there, nothing there. This other woman and I were actually terrified, and we grabbed our stuff, locked up the front door, and ran to our car(s!)
Also, the general area where these small office blocks were built had a faint smell of burning hair, and burning flesh, for some years after they were built. The longer time went on, the less you could smell it. The buildings were put there in the early 1980s, and you could smell the burning then, but you cannot smell anything now. I don't know if there was a burning smell pre 1980s, because it was waste land before then that no-one went to really.
I have had quite a few other (similar) experiences over the years too. But these are just a few.