In a strange way, browsing the Internet is a lot like being an explorer in deep space. You're not entirely certain what lies at the end of your next mouse-click, there's always something new on the horizon, and it's very, very easy to get lost in the endless expanse of data. I know I myself have spent countless hours on reddit alone, to say nothing of the rest of the 'net. In my case, the light of my keyboard and mouse have kept me company well into the wee hours of the night.
'course, not everyone has a backlight, and if I want to do a bit of reading without disturbing anyone, I'm sorta out of luck - my keyboard doesn't really give off enough light to make that feasible.
That's where the Astronaut USB Light comes in. Not only does this charming little gadget give off a fair bit of light, it also lets you pretend (if only for a brief moment) that you're drifting through the vast expanse of space, rather than sitting on your rump as the sunrise draws ever closer. All it takes to turn the device off and on is a flip of the visor, and its 30 centimeter USB lead is flexible and strong enough that it can be pointed in pretty much any direction.
You can pick up one of your own on red5 for $20.