This is a mod of my Guitar Hero II controller (Xbox 360). I decided to add some LEDs to the sides and cut a window in the raised section of the guitar with my logo in it. Here's some pictures of the progress, basically a condensed version of my Xbox-Scene worklog.

That is one of the side LEDs that I've added, the picture just shows how I mounted it.

Both side LEDs added.

There is the little raised section with my logo cut in it, not painted of course.

After a few layers of paint.

My favorite part so far, the side glow from the red LED :)

There's my case window, sorry the picture is kinda blurry but you get the idea.