Tired of solicitors knocking on your front door trying to sell you junk while you're relaxing? You can grab the Google Nest Doorbell, our favorite video doorbell, from Amazon for just $140, a $40 discount from its usual price, and turn them away without getting off the couch. This attractive and elegant video doorbell has a variety of smart features, full Google integration, and hooks up to a powered source so you never have to charge the battery. I have the wireless version at home and found it extremely useful for spotting packages, talking to neighbors, or just snooping on my house while I'm away.