I have an extra ball for my CST trackball on my desk, and I decided to design a nice 3D printed stand for it. It uses a standard skateboard bearing and you can make the ball spin for a very long time (and by that annoy your colleagues endlessly).
![](https://usercontent.one/wp/silfer.works/wp-content/uploads/2023/03/ZfUgwiv-1024x768.jpeg?media=1678572565)
![](https://usercontent.one/wp/silfer.works/wp-content/uploads/2023/03/0TgDZRq-1024x768.jpeg?media=1678572565)
You can find the files for this model here: https://www.printables.com/model/301938-billiardpool-ball-stand-with-a-ball-bearing