I have to have the volume on the TV be an even number.
I hate having finger prints on my phones screen so I constantly wipe it even if there is none on it.
I have to have a blanket over me to sleep.
When I fold paper or napkins I have to align them perfectly.
I have to clean something myself before I believe it's clean.
I have to fix slanted pictures on walls.
I have to make sure canned items are lined up, which was a bitch when I worked at a pet store.
I have more I just can't think of right now.