The Fun Theory

Vending machines usually dispense sugary liquid that isn't good for anyone. But those colourful plastic bottles are so much more appealing than water. To change people's behaviour, how about making a vending machine that dispenses water in tetra paks. To make it fun, the vending machine will have an interactive graffiti screen where people can use colours and finger strokes to design one side of their water pak. There could also be pre-loaded designs to choose from--or you can freestyle. The result is a customized water "bottle". Bet people choose water over pop, AND reduce their carbon footprint.

Submitted by Jasmine Bulgin