I posted this on another post, but it is so cool that I had to give it its own thread.
You can remove 2 opposite screws from a V-Cube 2, and it still works.
Now, to better explain, some V-2 pictures
zzzzz v2.jpg [ 159.43 KiB | Viewed 449 times ]
zzzz vcube2.png [ 237.46 KiB | Viewed 449 times ]
the spherical mechanism holds all sides in with only 4 screws!
not very well, though.
If you then turn it too fast, KABLOOIE!!!!