I've done lighting, watercooling with light and luminous coolant, cut holes in cases for lit fans, I even cut up an old monitor case front and put some cold cathode lighting in the bottom and leds round the power button (like on the old xbox).

So I'm just looking for a mod that looks cool and is handy to have. Fan controllers and the like but somehow different....

Also what are the most common mods you guys have done (or want to do)

And if you have never modded a rig...why not?!