I regard this 12x6 presentation (12 sides, 6 slices) as the Default Boing Ball, revered by all Amigans. Other presentations have appeared, particularly since the issue of OS3.5. This included a variety of 'Boing Backdrops' for use with the Workbench screen. Here, Boing Balls with a greatly increased number of sides and segments were introduced, which some people may prefer.
There's a comprehensive guide on the creation of Boing Balls in Tutorial 2