We found a Happy Pebble on our doorstep, and there were half a dozen up our street. People in Abingdon have been finding Happy Pebbles since mid September. …

and posting pictures on the Happy Pebble facebook page.

The page says “We would like to spread a bit of happiness, make someone smile on a miserable day – see if you can find one of our ‘Happy’Pebbles :)”