How Do I Disable My Gadgets' LEDs?

pHatidic writes "My college dorm room is never dark, even with the lights turned off. This is because of LEDs. Between the Airport Express, laser printer, surge protector, and Logitech mouse there is the constant nuissance of light polution. The powerbook has to take the cake though, with a green LED built into the power adapter and a white pulsating LED indicating it's in sleep mode so bright that I can actually detect it even with my eyes closed. Short of actually unplugging all of my devices every day, is there any way to disable all of these LEDs so I can actually get some sleep?"