I was checking out the Top 50 gallery of the Greener Gadgets Design Competition (presented by Core77) and some of them caught my eye:

The RITI Printer is an eco-friendly printer that uses coffee grounds or tea dregs in place of an ink cartridge. “The user places the coffee or tea dregs into the ink case located on the top of the printer, then insert a piece of paper in the middle. Moving the ink case left and right will print your image, and as you draw on the paper, dregs inscript on the paper just like ink.” No electricity required! Good for temporary, short-lived documents.

Wattblocks aims to reduce the consumption of standby power from electronic devices (AKA “energy vampires”) with the tap of a foot. The WattBlocks kit “consists of several WattBlocks, which are plugged in between wall outlets and vampire devices, and a master step switch that plugs into an outlet near the entry/exit of the home. As the user exits, tapping the step switch sends a signal through the home’s power lines, telling all WattBlocks to block power to the vampires.” Simple, straightforward, and saves on your PG&E bill.

The Ubicycle Public Bicycle Service System encourages biking as an alternative way to commute. “The bicycle system itself is comprised of three primary components: solar powered racking stations, smart-card readers, and the bikes themselves. Ideally positioned in residential neighborhoods, near schools, by mass-transit, and in dense urban areas, Ubicycle would encourage commuters to embrace human-powered transportation as an alternative to driving.” This could be implemented with compact or smartcars, as well.