The Geosphere Kit makes a 9" diameter sphere. Choose from a Dodecahedrom, Triacontrahedron, Sexagentahedron, or an Enenicontahedron. A great classroom or rainy day project. Easy to follow instructions. Recommended for children 8/9 years old and up. Assembly time is around 4 hours. Only supply needed (and not included) is a glue stick).
In 2010, researchers developed a method where a sheet of composite material can self-fold when an electrical current is passed through it. In 2011, researchers were able to get a polymer sheet to shelf-fold when exposed to light.: