There are lots of Internet-connected security cameras out there, but we love the Ring because it puts a camera where you could really use one: right inside your doorbell. Press the button, and Ring alerts an app on your phone with a live video feed of whoever is at your door, and lets you have an audio conversation with them. Ring can also record or alert you when there’s activity at your door even when nobody pressed the button. Ours actually caught someone trying to steal a package. $200, ring.com

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