Spiders. I've been scared of them since I woke up one day with a tarantula on me.
When it's dark I'm afraid to look outside, so I usually draw my curtains early, I also keep all my lights on.
I sometimes wake up in the middle of the night with what feels like I just fell from a height into bed, this usually follows a dream involving falling.
I also sometimes wake up then see the room spinning and start to see faces in everyday objects, like I pile of clothes, or a painting of flowers.