A few years ago I was interested in Penultimate Modular Origami by James S. Plank http://www.cs.utk.edu/~plank/plank/origami/penultimate/intro.html folding paper into geometrical spheres.
Now there's a rapman in my stable and paper turned into polylactic acid. This is my first printed object, I hope you"ll enjoy it! Can be pressed, stretched, thrown, twisted, and the bow-connectors could be basic elements for connecting rubbers into anything!
In TwistinTheCube.skp I tried to reveal how you get a Qball by twisting a cube, before it becomes a cuboctahedron.
The deal is to hold rubber bands tight to prevent them from ripping. These connectors are designed for thin rubber bands about 1.5mm thick and 12cm long, could be more or less.
For mounting, you can look at the photos on the black towel, it's quite easy. You need 6 convexe bridges, 6 concave bridges, 6 rubber bands and your 6 fingers. Open QballMounted.skp for a look around the ball.