#2: Petcam

Where does your cat or dog go when out of the house? Strap a wireless webcam around their neck and your immediate vicinity (within range of your router) starts to accommodate a wildlife safari. Pipe the pictures to a big screen and get close-ups of midnight mousehunting, roadcrossing roulette etc. An inbuilt microphone adds extra excitement.

Now it seems that this has actually been implemented.