The ball valve makes turning off the water very easy. Find a way to retrieve the messages from your answering machine. Many burglars call a house before they break in. If you answering machine has many messages, and the caller can detect it, it is a giveaway that you haven't been home for awhile. Install outdoor motion detector lights.
Motion detectors are very inexpensive and a good way to make a burglar think that someone is home.
If your neighbors know that there are motion detectors, they will pay especially close attention if they see the lights on. Lastly, leave a phone number where you can be found in an emergency. Leave it with a friend or neighbor watching the house. There have been cases where a burglar alarm has malfunctioned and the outside siren has sounded for days because no one could find the owner to disarm it.