Want to build a custom trackball and spinner

[sfetaz]

I am looking to purchase a 3 inch trackball ball, and the slikstik tornado spinner top.  Other than those two items, what would I need to build my own trackball and spinner?

[NoOne=NBA=]

For the trackball, you'd need the bearing/roller assemblies (3 of them), the encoder wheels, the optic cards and a mouse to hack.

For the spinner, look up either Nasty Spinner, or Cheep Spinner for details.