Loose Change

Our British five pence coin. It's tiny. ( Tiny Tuesday today). It measures about 1.7 centimetres and slips through your fingers, down the sofa, out of your purse, into the corners of your pockets, behind the far less valuable but much bigger two pence coin and is a thorough nuisance.
Also it doesn't buy much. I preferred it when it used to be a shilling.