The origins of this wallpaper cleaner made good are documented in lumpen detail elsewhere (go on, Google it if you must, thicko). By far the most interesting fact about Play Doh, though, is that it was first manufactured by a company called Kutol Chemical Products – a name so redolent of industrial toxicity it wouldn’t sound out of place in one of those post-apocalyptic ‘70s BBC dramas like Survivors or Doomwatch.