Banksy Slave Labour Sewing Machine Boy Men's T-ShirtThis Banksy piece did not go unnoticed when it appeared on the wall of a pound shop in London 2012. A clear comment on the labour used to make cheap Jubilee and Olympic memorabilia. Further controversy was caused when the mural was removed and put up for auction. It eventually sold for over a million dollars, but you can have it for little more than a tenner.