Use 1 or 2 variable timers for lighting the interior of the home at night. Double check to see that all windows and doors are securely locked. Make arrangements for newspapers and mail to be picked up, lawn mowed, and trash put out for collection by a neighbor or relative while you are gone. Review your insurance, and update the inventory of your house contents. Don't tell the local newspaper gadfly that you're going away.
Burglars can read the social pages too.
If you or a family member takes prescription medication, make sure that you pack a sufficient supply. Buy and use Travelers Checks and leave a record of the serial numbers of your travelers' checks in a separate location. Also bring a set of these numbers with you. Pack a small, working flashlight for use in the hotel room in case of fire. Put fresh batteries in the camera.