People will wear small flexible OLEDs on their face as jewelry and advertising

Here's another person who mentioned the same idea:
http://w1.siemens.com/innovation/en/publikationen/publications_pof/pof_fall_2003/light_articles/oleds.htm

"There could even be costume jewelry with OLED displays."
- Norbert Aschenbrenner, 2003

It is likely this could be used in space travel in ways we don't know about now such as a digital readout of emotions, heartrate, translation, and even spacesuit protection.