Every year Childline, a non-profit organisation that cares for abused and abandoned children, produces a sponsored calendar to raise money.

This year we thought it would be nice to let people relive a little bit of their own childhood by colouring in the calendar themselves to reveal, by the end of the year, a message from all the thankful kids at Childline. A pack of coloured felt-tipped pens arrived with the blank white wall calendar with a colour key in each day block so that you could, quite literally, help make their futures a little brighter.

Success/outcome:The calendars sold out, peoples dull offices look much happier, and the Childline kids' futures are much brighter.