Last month B, J, and V learned how to create origami polyhedron. Opa learned how to make them quite a few years ago--20+? (He purchased a book on polyhedron origami at Disney World in the Japanese pavilion when Kara was 8!)
Jake and Viva were intrigued by what he created, so they learned how to create them, too. We had a big basket filled with origami polyhedron on the school table for a couple of weeks.