Pull String Light

Another human powered device. This light has the advantage over a usual light of not having to be connected to the wall which means that you can move it around with you. Behavior like this will start to change our need for overhead lights and change the way we relate to light altogether.

Making Tea

Friction pads within the cup that rub together as you wind the handle could possibly be a method of heating water, which would save 60w worth of electricity by not using the kettle.

Harnessing energy from running

As you can see from this man, when people run they tend to hold their arms up and swing them. I think that that position and habit is a potential area to exploit in regard to harnessing energy from his movement. Alos if you look closley this man already does have something on his arm, which i presume is a heart rate monitor of sorts, so it shows that people are not averse to putting extra things on themselves, to learn more of what happens when they excercise.

1Kwh = ?

20w x 50hrs
50w x 20hrs
100w x 10hrs

1kWh

Each of these contain 1kWh worth of kilojoules. Which is the amount of energy needed to power a 100w light bulb to burn for 10 hours. Looking at the picture there is 80 hours of light there, and if you used an energy saving bulb that only uses up to 20w, it would burn for 400hours.