I am in love with this project called the Good Night Lamp on Kickstarter. It’s a set of house-shaped lights that are connected via the internet from anywhere in the world. The lamps allow you to have a visual signal that can play out in a number of scenarios, some of which are outlined in the video below. Want to see when your spouse is leaving work? Done! Ready for a conference call? Done!
You can have them as close or as far away as you would like and as long as they’re connected online, you can see the connection in real-time whenever the house lights up.