I did a few blink tests during post production to see if I could get what I had in mind to work. These were done using the liquify tool in after effects and key framing the effect in and out. They really didn't look very good, so I had to wait until filming so I had some footage to try it on.
I tried it out while I had a spare moment this week and it actually worked nicely but it was using vector paint effect so I was literally drawing in the blinks frame by frame. I will definitely put these in if I get time too.