A doodle by David Cameron is among lots to go under the hammer at Cornwall's Eden Project.
A selection of memorabilia and experiences, including a signed doodle of a sheep by the Prime Minister, are being put up for auction to raise money for transformational projects run by Eden.
The online auction, which takes place from December 6 to 16, is based on the theme of inspiration.
As the Eden Project came into existence with the help of a drawing on a napkin and a spark of inspiration, the charity asked famous faces and organisations to show what inspires them, through a drawing, a favourite book or a memorable experience.
Other quirky collectables up for auction include lyrics from the musical Evita signed by Sir Tim Rice, a piece by eminent artist Kurt Jackson, a visionary sketch of the future by Joanna Lumley, James Wong's childhood gardening book and artwork by singer-songwriter Seth Lakeman.
There are also special experiences on offer, such as wine tasting for six people at the historic London wine merchants Berry Bros, a spa day at Cornwall's Fowey Hall Hotel and a private chocolate and chilli tour for two at Eden.
Other lots include kegs of Sharp's Doom Bar Bitter, a luxury gift set from Neal's Yard Remedies and an exclusive Ultimate Chocolate Feast hamper from Eden.
Sir Tim Smit, Chief Executive, Development, of the Eden Project, said: "Inspiring people to believe they can make a difference and giving them the tools to do so, is the key to all our futures.
"This is a principle that informs all our projects both here and across the country, which is why we've encouraged friends of Eden to share something that inspires them."
The auction will raise money for a range of Eden projects, from working with the school, college and university students who visit each year, to engaging with socially excluded young people and helping community gardening groups to flourish.
To find out more about the online auction, or to take part, visit www.edenproject.com/auction