I had forgotten all about What should I put on the fence? but it's good to see it's still going strong.

If you've never seen it before, the idea is this: there's this bloke who works in central London, see. He used to cycle into work and chain his bike to the fence outside. One day a notice appeared: "Bicycles found chained to these railings will be removed without further notice". So he took to chaining other things to the railings - not bicycles, but anything else: a pan, an ironing board, shoes, a toast rack... Whatever you suggest, really.