prob. cut the side panel, stick acrylic in there, add a few cold cathodes, a blow hole or two, and on the top, add a nice modded blow hole and cut it and put plexiglass or anything, there.
cut a big square or a circle on one side and replace it with a glass, which can be easile removable when required, so that you can see whats going on inside and can change anything by just opening one side.
Window with fan or a blowhole would be the best. I have a computer with a window with a 120 mm fan hole, but no fan, so i can access the guts without taking it apart.
try to find an long set of LEDs that a red, in a strip that can flash across the strip and put that going down the black plastic from the red light, if they can move once in a while thatd be awesome, also, some acryllic on top would be cool