Patrick Rothfuss has a great website with items for sale based on his and sometimes other authors works. The proceeds go to his charity, World Builders, and they donate it to Heifer International

http://thetinkerspacks.bigcartel.com/product/2014-calendar-combination-pack

Currently there is a sale to get both the highly coveted Fantasy calendar and the Heifer International calendar as a combo. There is jewelry, t-shirts and lots of signed books by Pat and other authors so check it out!!