Imagine:
You find it hard/too lazy to clean up the house.
You call Jehr.
Jehr flies to you, you fall asleep for the time of cleaning, both of you are wearing helmets that give a connection between your brains.
You wake up a few hours later — the house is tidied up perfectly for you, and you remember where everything is.
Jehr puts unnecessary things in his cube, which has a large compressed space inside (it fits there much more than the size of the cube).

After a working day, Jehr arrives at a warehouse-shop-flea market, where unnecessary things at a low price find a new owner.

Jehr with a black cube — reverse Santa — Santa brings new things, Jehr gets rid of old things :>