Two charities supporting people with neurological conditions have teamed up to run 'National Doodle Day', a campaign asking the public to buy special cards to doodle on, which should raise at least £1m.
Epilepsy Action, and the Neurofibromotosis Association, which helps 25,000 people affected by the brain condition in the UK, will launch the campaign next Monday.
Some 2 million postcards have been printed with 11,000 already sold to schools. The rest will go on sale next week at 1,300 branches of sole distributor, Lloyds Pharmacy, for £1 each.
Doodle Day patron Terry Wogan heads a list of 325 celebrities, including Richard Branson and Cherie Blair, who have produced doodles for the campaign.
The doodles will be auctioned on 27 February, while the public have until 15 March to enter their doodles in a prize competition.
Roberta Tweedy, chief executive at the association said: "All signs point towards it capturing the public's imagination, probably because doodling can be done by all ages and makes us smile."