magnetic floating globe
$99.95 at uv scientifics online

Perhaps not the greenist gee-gaw in the world but it is a wonderful tribute to our planet. Having the world spin and hover over your desk could remind you keep our planet in the forefront of your attention. This blue and silver globe auto-rotates while levitating magnetically with a mechanism that turns objects clockwise, counter-clockwise, or off. The base includes a LED light above and below.The globe can be replaced with a number of different levitating items, that the site also offers for sale.

Indigo LED Lantern from Freeplay Energy
$50.00 at econsciousmarket.com and Grist

The Indigo LED Lantern uses several ultra-bright LEDs for general illumination along with a single uni-directional LED for use as a reading light or flashlight. It can be powered by a wind-up self charging feature that will charge the rechargeable battery with about 60 seconds of winding and provide enough power to light up the LED at the lowest setting for 2 hours. A full charge will give you enough power to use the brightest “ultra-bright” setting for 2 hours and the other lower settings for up to 35 to 70 hours.
It also features a dimmer switch to control the brightness and will also allow you to extend the time between charges. The LEDs are rated to last 100,000 hours. Great for outdoor nighttime activities and to keep around in case of emergencies.