Obviously you need to believe in them, then you need to admit and then-
You need to want a bit of a destructive fairy.
This fairy likes to change your cheek pieces round so they are twisted when you tack up. So you need to undo it.
They also fiddle to get the noseband wrong, which you notice on a hack and you haven't cleaned the bridle between rides.
They hide things you were just using.
It's not other liveries because this little fairy has been with me at all previous places!
On loan to good home. I'm sure she won't want to leave forever.