I thought this might make a nice Christmas decoration, so folded the model again - this time using foil. It's a cheap craft paper that's available here in Germany: a sandwich of foil, paper, foil. It's not that easy to work with and you very quickly see breaks in the foil, and thus the white paper that's in the middle. Still, I do like the effect of using foil.
Paper: 30 sheets of double foil (foil-paper-foil), 3.9cm by 11.7cm
Model: Sphere with a diameter of 8cm