a 'plastic' bullet [=a bullet made of plastic that is used by the police, military, etc., to stop violent people without killing them]
He needed 'plastic surgery' on his face after the car accident.
She used 'plastic' to pay for her new computer.
(..) I want you to get Lois to introduce you to Superman. Find out who he is. Where did he get that blue suit? Did he have it made? ls it silk? ls it plastic? I know it all seems a bit much... ...but how else was I going to meet you, Superman? I knew you'd never accept an invitation to tea. (..)1978 Superman