Folding and cutting spheres. Awesome symmetry balls include card constructions by George Hart, which you can learn about here (and others are on ... ): ... and the Gardner Ball by Oskar van Deventer with design by Scott
by Niler Taylor
by MakeMoneyWelding
by Hectanooga1 - Crochet, Knitting,
by Sara Martinez
by Play Doh compilation from Peppa
by CTV News
by Kathy Bergeron