Blood, sweat and light
This looks like the kind of thing 10:10 would be into http://blog.creamglobal.com/right_brain_left_brain/2010/10/carbon-saving-charity-1010-say-sorry.html. It's a lamp that is lit by a chemical reaction triggered by the addition of user's blood. Quite dark. The artist and designer Mike Thompson crafted this prototype lamp to make the user consider the cost of energy.
Mike explains the concept below: "What if power came at a cost to the individual? The average American consumes 3383kwh of energy per year. That’s equivalent to leaving the light on in 4 rooms for a whole year. The simple flick of a switch allows us to power appliances and gadgets 24/7 without a thought to where it comes from and the cost to the environment."
"For the lamp to work one breaks the top off, dissolves the powder, and uses their own blood to power a simple light. By creating a lamp that can only be used once, the user must consider when light is needed the most, forcing them to rethink how wasteful they are with energy, and how precious it is."