Kristin: We joined the numerous households in observing Earth Hour on 29 March, by turning off lights and appliances and using candles instead. No internet meant face-to-face scrabble instead of Facebook Scrabulous, but the candles failed to illuminate the tiles. Luckily, we had our own solution in the form of throwies left over from the Graffiti Research Lab Masterclass. Do you think these classify as cleantech???