Burglars who come out at night would rather hide their dastardly deeds in the dark. Shine a light on anyone—good or bad—with a motion sensor spotlight. The light is sensitive enough to pick up human activity, but not so hypervigilant that it switches on for stray leaves blowing in the wind. Place motion sensor above entrances, and up high out of reach of tampering, to protect your home. Available on Amazon; $24.99.