Helpful things post 5 g

These are a few little tasks that can take some frustration out of our lives. They are all practical and hopefully without costs.
I hope that when 5g comes to pass we can use it to find our keys. So many times we wonder, where did I put my keys..So a small RFID or sensor plus a couple of beacons should allow us to find them rapidly in our homes. It may seem trivial and not as grandiose as other ideas but it could help a lot of people.
Another one is- did Iturnoff the gas, water, lock the door, turn on the alarm, put the cat out. Again if we are leaving home in a rush thenthese thoughts pop into our mind. Because we do it constantly we more than likely did what do we do now- turn around and go back to check. Then we are late and annoyed and indeed traffic may have got worse. When we have 5 g and our things are connected it should be easy to have a leaving house routine where doors are locked, gas turned off, water turned off etc. A few solenoids, a small software programme and then connectivity to it from car or smart phone or even telling a device that you are leaving home.
The same when returning, especially if it is dark and cold. At present we have tolog into an App, turn on lights, kettle etc. How cumbersome and unpleasant is that. Again a simple software script, a voice sensor and a call to connected device should allow a check list or routine set up to be started and ready for you.
Just some simple ideas of what might be useful to mere mortals!