Magnetic Toys

Magnetic Cube

Many colors to choose from: 
From MagneticCube.com: BUY NOW Magnetic Dice Cube 

See also the original indestructibles post: Magnetic Acrylic Rubik's Cube 

Magnetic Cube: a twisty Rubik’s Cube puzzle made from 27 dice and 108 neodymium magnets. This cube includes the scrambled states and solutions of the original 3x3 Rubik’s Cube but is held together only by magnets! The magnets, in this special configuration, lock the dice together with a satisfying click upon rotation. This beautiful cube was produced by Owen Lillywhite of magneticcube.com and is based on a gfixler design posted on instructables.