Audible alarms on entry points. A panic button in the bedroom near your bed is nice to have. And a short response from local police. 99.9% of would be burglars will turn tail the moment the siren starts going off. Oh, also be sure to put a nice "Washington Alarm" sticker on some doors and windows so maybe they'll see it, and reconsider boosting your house in the first place. I know one guy who put a Smith & Wesson decal on his, although I'm a little troubled by the implication, and its an advertisement that you have valuable weapons within. Talking to my wife, there are meth heads who will take a chance of breaking and entering to get resaleable guns, and its usually not too hard to figure out when someone isn't home. Audible alarms...