And here it is. The cube with the fewest components ever created.
I have designed an alternative Rubik's cube (2x2x2). It has only 8 pieces covering a spherical magnet. I think it should feel nice on the fingertips, working fast and smooth. You can see the construction video on my youtube channel.
Magnet: spherical N42
Coating: Chrome-plated (Ni-Cu-Ni-Cr)
Strength: approx. 2,9kg
Max working temperature: 80°C