I don't care that much for the current craze with thinness -- but on the other hand even the slimmest off the shelf part accomodating cases are way beyond lapto

I don't care that much for the current craze with thinness -- but on the other hand even the slimmest off the shelf part accomodating cases are way beyond laptop territory, I do not think it could get any smaller than https://www.sfflab.com/products/nfc_s4m https://www.sfflab.com/products/nfc_s4m and it's 64mm.