How do I create a sphere with six circles cut into it? I'm attempting to model BB-8 from The Force Awakens, but I'm struggling to create the base shell of his body. He's essentially a sphere with 6 equally spaced circles cut out of its surface. The remaining shape is then cut into 8 segments, like here:



If I could even create one of the segments I could then duplicate it.

Any help is appreciated!
Create a cube a default cube
Enter Edit Mode
Inset all its faces at about [0.3] or [0.4] units
Add a Cast modifier
Add a Subsurf modifier at about 3 subdivision levels
Add another cast modifier
Profit!