Well, maybe I'll start something!
When I get my PS2 modded and it comes back (I've decided not to do it myself) I'll stick a computer fan blowing out from the PS2 on it. The PS2 has too many air vents, it would be too hard to put filters on all of them. So, I'll stick a fan on it to blow any dust out, aswell as lower the operating temperature. Only problem is the power supply. You might be able to get it from the PS2 supply, but you may get bad effects not much different from putting an Afterburner light in a GameBoy Advance.