Textbooks and Haversacks
Imagine a world whereby all schoolchildren carries a TPC instead to school. All their textbooks exercise books assignments and projects all stored in a TPC not much larger than an A4-sized paper. Even a pencil box containing pen and pencil can be discarded. For Geometry they need not bring along a compass ruler protractor and set-squares. Everything nicely stored in a TPC and no need to even carry along a notepad.
With such an arrangement the children need no longer need to carry a heavy weight on their little shoulders.
Teachers too will no longer need to pack away stack of books back home for marking for everything will be digitized and stored in their TPC. Wow! What an ideal world.