How did they get the name?
I have a stuffed dog named Platelet. Someone gave him to me when my mom was diagnosed with cancer, and I happened to overhear her telling my grandmother that she needed more platelets. Nine-year-old me ran into the room waving the dog and yelling "MOM! I FOUND YOU A PLATELET!"
well, I didn't know what a platelet really was, so it seemed like a good name at the time.