Cube
From Tardis Wiki, the free Doctor Who reference
A cube was an object with six flat faces, all of them square.
A number of mysterious black cubes once appeared on Earth; they eventually turned out to be Shakri cubes. (TV: The Power of Three [+]Loading...["The Power of Three (TV story)"])
Story-cubes were used for information storage, (PROSE: The Dalek Chronicles Found! [+]Loading...["The Dalek Chronicles Found! (short story)"]) as were thought-cubes. (PROSE: Justice of the Glacians [+]Loading...["Justice of the Glacians (short story)"])
