Be a Rubik Rube
Some people spend hours memorizing thousands of digits of pi...others spend hours mastering speed-solutions of the Rubik Cube. The trouble is, the Rubic Cube was "in" more than two decades ago, made a brief spurt about a year ago, and now it is hard to find a Rubik Cube to work (i.e. play) with.
So, why not create your own Rubik's Cube...using a set of red translucent dice? The full set of how-to instructions are available (courtesy of someone code-named burzvingion), providing an additional learning experience.
Because the dice cube focuses on numbers and not colors, the goal is to get all the same number of pips on each side (as shown on the right). It is a variation on what is called the "Sudokube," where the goal is to get the set of nine digits 1-9 on each side. In the red-dice cube, the "non-symetrical nature of some of the die patterns gives the dice cube an extra element of strategy not present in regular Rubik's Cubes. This variable of rotation is an aspect of the "sudocube," but the dice cube is easier to solve, because each face contains identical figures, and every cubie is unique--two properties of the original Rubik's Cube that are not carried over to the "sudocube."
Other Rubik Cube options are available, two of which are not actual cube constructions but are extensions of sorts:
Finally, for more information about a Rubik Cube, consider its official web site, a readable overview on the workings of the cube, and a tutorial on using mathematics to solve the cube.