The Challenge: Ah, Christmas! That time of year when you get flooded with carbon copy e-greetings. Of course, when you're an advertising agency like Ogilvy and you pride yourself on growing brands in a unique and big way, you'd want to send your clients something that's unique.

The Big Idea: "Ogilvy helps you grow something unique (and bigger) all year round." So we grew a personalised e-garden for each client. After all, why feature a Christmas tree e-card when you can feature a freshly grown Christmas garden?

The recipients can then create their own garden and send it to friends.