" He bit his fingernails. He bit his toenails. He pulled tiny green threads from his shirt and tried flossing his teeth. Then he tried making little green designs with tiny, tiny knots. Then he hit on the idea of weaving messages. Could he macramé "Help, I am a prisoner . . ." and plant it on the back of someone's jacket by static charge? If someone ever came back, that is? He got as far as a delicate gossamer H, E, L, caught the thread on a hangnail while rubbing his stubbled chin, and reduced his plea to an illegible green wad. He pulled another thread and started over. "

― Lois McMaster Bujold , The Vor Game (Vorkosigan Saga, #6)