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 Learn To Grow
by rigidheddleweaving
by Fernando Jimenez
by AngelDreamCrafts
by Cha ART
by Japanzor
by Marques Darmawan