I always thought that YoYos were invented in the Philippines, but Wikipedia points out that although the word Yoyo is Ilonkano, the toy is ancient:
The earliest surviving yo-yo dates to 500 BCE and was made using terra cotta skin disks. A Greek vase painting from this period shows a boy playing yo-yo (see right). Greek records from the period describe toys made out of wood, metal, or painted terra cotta (fired clay). The terra cotta disks were used to ceremonially offer the toys of youth to certain gods when a child came of age—discs of other materials were used for actual play.More discussion here...although the weapon used in the Philippines sounds more like a bolo than a yoyo...