Product idea: personal mainframe.

Imagine a desktop small enough to fit in a backpack. It has a battery, a cell connection with data, decent GPU ram etc. Your phone is now just a display and a battery. Your laptop is the same but a bit bigger and with a keyboard.

Each electronic device you own is now just a terminal used to access your mainframe. You can take your mainframe with you or leave it at home. It’s yours. You don’t rent compute from someone else.

Would be amazing to have truly thin and very portable devices.