Via Instructables.com:
This is a short instructable on how I moded a Nintendo Wii case with fiber optic stars and logo for a Star Wars themed Wii!

The parts include:

Black Wii case (ebay from Great seller msmmall)
Fiber optics 2 diff. sizes (E-bay from Great seller thefiberopticstore)
L.E.D. ‘s: I used 3 yellow,4 white, 3red (1 for light bar, 2 for Wiimote and Nunchuk)
Small amount of Plexiglass
Thin brass sheet
Epoxy
Sticker paper
A needle
Model paint
wires, solder, soldering iron, etc.
and a Wii!!!

Click below to see all the instructions.