+ A small sphere drone with a dusting cloth around it to vacuum things.

+ Never charge a remote control anymore.

+ Knowing if someone is present by sensors in the floor, furniture, etc.

+ Automated valves on the heaters.

+ Charging locks (not requiring wires should be better w.r.t. security).

+ Easier light placements. They can be put in any cabinet (where it is normally dark, but you don't want to put wires).

+ Blinds, curtains control

+ Speakers integrated in couches / chairs. Perfectly located. Vibrations etc. is also cool as experience.

+ Clothing. So called smart "shoes", "belts", "umbrellas", etc. only hinges on wireless charging taking off.