I used to hallucinate a bit as a kid, well one day I was trying to sleep in my mothers bed, not sure on the time but it was very dark and i was aged between 8-10 years old.

Wellllll, i think my mum used to have some items that looked like dolls on the shelf in her room(i say looked like because when I asked my mom about the dolls she used to own she adamant she never owned any). it was a bit dark so I don't remember what they actually were, but when I started hallucinating I saw what looked like dolls standing on her shelf after a while they jumped from the shelf to the floor and then run under the bed I was sleeping in. I didn't find it spooky at the time, even when they jumped onto the end of the bed, they were so small i didn't really see them as threatening, but they did make me very uncomfortable. I eventually got up and left the room to go to my own room and in the middle of the room was my dressing gown just floating, it turned and started coming towards me, i screamed "it's floating it's floating" at like 3am. My parents ran in and turned on the light and I saw the dressing gown fall to the ground in front of me as they came running to check on me.

I tried explaining to my parents but was so scared all that came out was "it was floating IT WAS FLOATING" while pointing at the pile of clothing in the middle of my room. Can't remember what the rest of the night was like, but it was a lot less eventful.

Another 2 side stories just cause I remembered them. I was once sleeping in my bed when a man in a black cloak walked out from the mini forest across the road from my house, he walked under a tree and just stared at me through the window from across the road. I blinked and he vanished, like literally blinked and he was gone. He was realistic as hell, nothing to say he was an hallucination but poof, gone in a blink. years later I was walking with my friend friend to get some cider from the local garage(very classy I know) and I jumped a set of stairs and looked back while jumping, it was only like a split second but the cloaked man was stood there literally 2 feet from me, staring me down again. I turned back to land and turned back to see wtf I just saw and he was gone again.

This one is a lot shorter, i lifted up a sewer grid thing. I think they're called manhole covers, the circle ones. Anyway i lifted up one of them and inside was a group of 3ft long cockroach like creatures just running around at full speed inside.