Can you spare a penny?

I popped in to my local M&S Simply Food to buy a loaf ..... being a holiday the check outs were busy so I went to the self check-out to save some time. I know you don't get 2p or 10p coins in change but to get 22 x 1p coins .... they just kept dropping into the tray .... guess they had run out of 5p and 20p coins. Next time I'm at the shops I'll be looking for all the charity cans.