What's the most ecologically daft thing you have ever done?

On our last night in Bruges, I found myself using a hair dryer to dry a teddy. 1.2 kW of energy pointed at a toy. Probably the nadir of my attempts at eco-living.

My excuse is: we had 10 hours of travelling with small child the next day and he decided to chuck teddy in the bath. The thought of risking a sleepness night for all of us if teddy wasn't safely in bed with the boy was too terrifying to contemplate. Didn't stop me feeling pretty stupid all said and done.

So what have you done recently that's made you stop and think "What the hell am I doing?".