Automated and cheap.
Used many micro drones all connected to each other wirelessly with the central “brain” controlling them and use to dispatch small but effective explosives all at once, directed at specific targets.
Deliver secret messages.
Use small intelligent drones.
Have a light fixture follow you wherever you go in your home.
Use small smart drones with LED lights. They hover above you and follow you wherever you go, so there is light only where it’s needed.
A novel way to deliver a letter or a small gift.
A delivery service that uses small drones at the last step of delivery. Most of the route is done by a car just as any other delivery. When arriving at the recipient’s address, a short distance hand controlled drone is used for the final step of delivery at the front door or even a window.
A drone that knows how to go around the house and stream a video feed can be useful. For instance, you can check if you left your keys at home, or see if the stove was not left on, it can alert you if there is an intruder, etc.
A drone that can navigate the house (using the visuals it analyzes from the video cam, the map in its memory, etc.) Anytime you can remotely activate it and tell it to go somewhere in the house and show you what’s there. It can also be programmed to react to certain events, like sound, motion, external input (alarm system), etc., and alert you when the conditions you requested are met. You can also program it to do “the rounds” from time to time as an extra security measure, and alert you when something is out of order (like a change in the what it sees compared to last time. When not active it can land on its charging mat to recharge.