I'm 52 and have poor eyesight (it is true that your eyes need more light to see fine detail as they get older) so wish for a slightly bigger screen - n800xl? - 6" or so would be nice.
The first real 'computer' (that did something interesting) I ever saw was a Hercules flight simulator which took up several thousand square feet of floor space in about 1970 I think. It could not generate a landscape so there was a giant model landscape mounted vertically over which a camera could traverse. My next excursion into computing was data loggers on super tankers in about 1975... again they needed enormous amounts of air conditioned space.