First and foremost, I would like to see a peephole 
cam that looks through the exisitng door peephole. All hardware would reside inside the house/apartment. There would be no visable signs of a camera existing from the outside.
Other than that, …
A robot that can vacuum the house and mow the yard. It would have a camera and have a vacuum attachment and a separate lawn mower attachment. When job has been completed, the robot will sit in an electric chair to be recharged.
A solar powered quad-copter with a camera to circumnavigate the estate. It would have unlimited flying power during the day and rest at night. It could work on 2.4 GHz, 5GHz, or 6GHz.
A camera inside of an artificial, but realistic, Avocado. With optional solar panel.
A Wyze air freshener/air purifier with a camera for the mantle above the fireplace.
A Wyze camera inside of a Christmas Ornament.
