Go with the "it takes a village" mentality on Halloween night and consider the safety of other kids visiting your house.
Know that if you leave candy and a sign that says "Take One" that most people will ignore it and a free-for-all will ensue.
If you will not be at your home on Halloween, think about a "lights out" policy so no one will visit or vandalize your home.
Just in case visitors venture up to your door, make sure that their path is free from electrical cords or decor that they could trip on, especially if you plan on leaving the lights off.
Never leave a lit candle in a Jack-O-Lantern on the porch or outside if no one if home.
Consider taking pumpkins or Jack-O-Lanterns inside if you will not be at home at night or there is a chance that they will wind up smashed on your sidewalk for all to slip on.