Dog that can go in and out..
I keep a nice, wood bat in the garage by the door. This is my first line of defense against dog-at large or that guy in the car who just doesn't like where my kids are, or who wants to talk to them.
Noisy things are by all our windows. You come in a window without making noise somehow and you are bound to knock over some noisy stuff or get caught up in kids toys, hopefully alerting the dog. The things I have in front of the windows also allow the kids to easily climb up, unlock and open if necessary. Right now my oldest knows how but the others will learn when ready.
Know where the weapons of opportunity are in your home.
Do you have a fireplace with a nice steel poker?
Are your kitchen knives where you can get to them but somewhat out of plain sight?
Loaded handgun in safe next to bed.
I want to go with an unloaded 870 behind the bed and keep shells nearby, but that's not in the budget yet.
Definitely keep good SA in the neighborhood. Know your neighbors and know who doesn't belong there..