Ozo, an adorable 3D-printed bear, is introducing children to the Rubik’s Cube. The retro toy stumps even adults, but it turns out the exercise helps develop important mental capabilities. Ozo Bear teaches kids problem solving with body parts that have to be rearranged to put him in the correct shape. The product is still in early development stages, but mass production predicted for Ozo’s future and 3D-printed playthings are an emerging toy trend to watch. (psfk)