"It's all well and good to get the people in a room and stop them from shooting each other down in flames for a short while, but if they don't have (or don't know they have) the mental tools to construct ideas, in my experience not much is going to happen. The most exciting technique I've stumbled across is Charles "Hipbone" Cameron's Glass Bead Game, reverse-engineered from a game played by characters in Hermann Hesse's novel. … Mind mapping exercises discover ideas you've temporarily forgotten by following the connections between them. Glass Bead games create new ideas by creating the connections between existing ideas."
-- Garth Kidd, "Brainstorming and the Glass Bead Game"