Twentieth Century Fox is doing something novel, and giving away key props and costumes from a popular television series, rather than auctioning them off.   How I Met Your Mother , the popular CBS sitcom, ended it’s nine season run earlier this year, and now fans have a chance to win free props from the show for free via a special Tumblr page called the “Prop-erty Vault”.    All of these efforts go toward promoting The Whole Story on DVD, which goes on sale next Tuesday. [Read more…]