Medical conlang challenge: You've all heard about people who have multi-year episodes of total body paralysis, often only leaving them in control of their eye blinks. What would be a handy "prestige script" would be a way to map eyeblinks to toki pona. Morse code comes to mind, but that has already been done and eyes have more than 3 states:
left closed, right closed, both closed
rapid blink, slow blink,
pause, long pause (between blinks)
(others? half closed? sweezed shut?)
So any suggestions on how to make a suitable "phonology" or script using only two eyes?