Zack – This page is all about Yo-Yos . . . including a little background and history – to give you a sense of where they came from to be such a classic toy. But yo-yos are not all made of wood. In fact, they're more often made of plastic, tungsten, and other exotic alloys. For many years the Duncan Imperial yo-yo was the defacto "standard" among yo-yos around the world. Mexico's yo-yos tend to be larger, narrower, and more multi-colored. Wide-flanged, butterfly Yo-Yos are specifically designed for doing tricks. There's something special about the quality and value of wood.