Advances In Rubik’s Cubes
(with comments)

Only $149.95: Touchscreen Rubik's Cube.

This is the touchscreen version of the Rubik's cube that first challenged puzzle-solvers nearly 30 years ago. Instead of turning each face of the cube to line up colors, modern-day players need only lightly swipe a section of lights with a finger in the same manner as the original. Touch sensors on all sides detect your finger and a motion detecting accelerometer determines which face is active; the colors change according to the direction of your finger's swipe.

It takes eight hours to recharge it, and a charge is good for only one hour. That seems pretty inefficient.