If you are a fan of Brandon Mull, Christopher Paolini, Gregory Maguire, Brandon Sanderson, Tad Williams, Patrick Rothfuss, Cassandra Clare, Holly Black, Lauren Kate, Lauren Oliver, Maggie Stiefvater, Gail Carriger, Tessa Gratton, and/or Brenna Yovanoff then you should consider backing this cause. You have the chance to get one of a kind merchandise from one of your favourite authors, get their signature and maybe skype one of them for 30 minutes!
Once all the calendars are sold hopefully they will make a tidy sum which goes towards two charities. Firstbook helps to get books to children in need; Worldbuilders was started by Patrick Rothfuss and aims to help people less well off than us, making the world a better place.
It’s a very ambitious project but I think it is a very worthy cause. You as a backer will get some cool stuff to go along with your charity.