We love sun-lit offices during the day, but good backlighting reduces eye strain and looks awesome at night. Reader András Horváth made his workspace glow green with plenty of well-placed LEDs.
This setup is actually pretty easy to do yourself. You can easily pick up inexpensive LEDs at stores (try IKEA) and place them around and beneath a glass desk. To find out more about the gadgets on András' desk, check out his Flickr post. It's annotated with additional details so you can see what else he's using.