The Cadbury Wishes Workshop will visit nine cities and shopping centres across the UK, giving people the chance to invent their own chocolate.
Consumers will also receive a personalised Cadbury Wishes photo.
The campaign is being produced in partnership with the Make-A-Wish Foundation, with 10% of all profit on sales going to the charity.
"We wanted to highlight Cadbury's status as the market leader by creating something that celebrates the magic of Christmas, but in an original and quirky way," said Initials Experience head Chris Wareham.
To leave a comment and let us know your thoughts.