Remember the size of the original iPhone? I have long wondered why nobody makes a universal compute brick in such a form factor without a screen. Then sell 5" or 7" or 10" or 27" screens with and without touch that connect to the little brick.

I can buy a 15" screen right now for under $75. It's the ultimate super-thin laptop if you remove the compute and keep the brick in your purse/backpack/holster.

For extra points, connect two compute bricks for more muscle.