flexi ruffle.

  1. rez a Sphere* >
*the sphere will be used as a guide for placement , alternatively you can try this on a cube - in that case skip the wireframe step up ahead.
  1. rez a Cylinder >
    under Features tab, set to Flexible >
    Object tab >
Path Cut | b: 0.0, e: 0.5 |
Taper | x: 0.0, y: -1.0 |
Hollow | 95.0 |
  1. enable wireframe view* >
*preferably a reshader wireframe, if you don't have that, CTRL + SHIFT + R to toggle the default wireframe. 
  1. find a horizontal line to follow >
    position the flexi on the center of an edge >
    rotate & scale so that the flexi cylinder lays flush & fits the width of that edge.
  2. duplicate flexi >
    position on the edge next in the Loop >
    flip the Path Cut, so do | b: 0.5, e:1.0 |
repeat ad nauseam .