Make sure your keys are upstairs with you when you go to bed.
Not the best idea! If they break in and get the keys downstairs at least its only a car and can be replaced, if they have broken in and the keys are upstairs you put yourself and your family at risk!
They are unlikely to come upstairs mate. If they wanted a confrontation they'd just walk in through the day/eve, give you a slap and take the keys. The idea is to make the neighbours house more attractive to burgle. They majority of the time they only come in if they can see the keys in the back of the door, on the side table by the dor etc etc.
This is of course just my opinion and regardless they are scrotes
. My keys are by my bed, along side my old mate Percy Persuader, aka a rather nice rounders bat!