One could make a mini-itx computer, connect a battery to it like a UPS perhaps the size of a laptop battery.. But then for screen and keyboard, how hard would it be to connect a laptop to the mini-itx ...
The GPD Pocket 3 is a small but versatile mini-laptop computer with an 8 inch display that supports pen and touch input, a swivel hinge that lets you fold the screen down over the keyboard for use in ...