MemeMachineGo! tells me that a new "tree-ware" edition of Brian Eno's Oblique Strategies is available.
The strategies are a series of enigmatic phrases, meant to be drawn randomly from a deck of cards, and used to kick-start your little brain cells, get you through a creative block, or whatever. The cards themselves only enjoyed limited release, but there are a number of software versions of the deck available. (I used to have a Windows version of it that doesn't appear in this list, which I liked, but I can't find it anymore.)