The to enter their postcode and find their property on Google Street View.
They then have a variety of garish Christmas lights and decorations with which to festoon their houses, in a bid to create one of the blinging displays that draw locals from miles around at this time of year.
The campaign has a serious side, tying in with the 'Big Build Up To Christmas' push by Shelter, which campaigns on issues of homelessness and decent housing.
The charity is aiming to raise £1.2m in the run up to Christmas, and is asking people to make a one off donation, explaining the story of one family who will spend this Christmas in a safe, permanent home thanks to Shelter.