It would've been Moore's 101st birthday on Friday (April 30).
Moore, who raised £39 million pounds for Britain’s National Health Service by walking 100 laps of his Bedfordshire garden, died in February.
His daughter, Hannah Ingram-Moore, is now asking members of the public to create their own fundraising challenge based around the number 100 - the age at which Moore passed away.
Participants can raise money for the Captain Tom Foundation or a charity of their own choosing.
Various celebrities have come up with their own Captain Tom 100 challenge.
David Beckham has pledged to do 100 "keepy-uppies" while television cook Mary Berry will be baking 100 cakes.
The event runs until Monday, May 3.