What is the green light? Actually the Green Light is a plant grows around an energy saving lamp in a recycled pet-bottle. You can grow it or cut it to dim or brighten the light. This ecological idea created by Twan Verdonck for DreamingreeN.
"The different plants are going to be available in addition to the current hedera (plant-speak for ivy), including grape and tomato vines. The Green Light is available preassembled for 50 euros, in a kit for 25 euros, and as downloadable instructions for only 2 euros."