I sleep with a spray bottle by the bed! I figure by the time they have done the damage, there is very little point in me giving in to them. They have to break glass (or each other) for me to give in. Mind you, when desperate for more sleep, I also trick them by starting to walk out of my bedroom, they all tear out of the room to be the first out of the door... but I just shut the bedroom door on them. Takes them a few minutes to realise that not only am I not coming after them, but they can't get back in! It is amazing how they all settle down after that.