iDoorCam. . It's WiFi-enabled, and contains a button, day- and night-vision camera, microphone, speaker, and motion sensor, letting you see and communicate with whoever rings your door. It pairs with an included iOS app, letting you monitor your door from inside your home, at the office, or away on vacation, so you can choose whether to interact, or just let it ring.
Transparent Toaster - This concept for a transparent toaster allows you to see the bread while it is toasting so you’re never surprised by toast that comes out too dark. This idea is based on heating glass technology.