I just remembered... I think my greatest contribution was in the field of """user experience""" for the Atari 400/800. For printing we had to figure out which way users had their "auto line feed" DIP switch set on their printer. I felt like it would be rather off-putting to ask the user something so technical during setup while they're just trying to get going. So my big idea was to print a big V (like \/) then a carriage return and then an inverted V (like /\). Then the program would ask them whether they saw a diamond or a squiggle on their printer.