I heard Dougald speak yesterday on the “why don’t you…?” web, the web (immediately recognisable to UK readers of a certain age) that enables us to “turn off the tv set and go and do something less boring instead”.

I then saw someone on twitter point to Guerilla Gardening, a site that facilitates small groups going out and making urban spaces more green, leafy, flowery or otherwise lovely.

And then this morning when I got some cash out, I noticed how bloody filthy this cash machine in Cockspur Street is. And I wondered if anyone would want to do some off-the-cuff street cleaning – the nightmare is that you’d probably be arrested immediately with tampering with a cash machine, no matter how much you protested that you were performing a secret civic service. But might it have legs (particularly for urban dwellers) are there things you could clean without getting into trouble, especially if there were a group of you and are there lessons buried in the Guerilla Gardening site that might help it happen?

Implementation is left as an exercise for the reader.