I carry around my laptop wherever I go. The laptop is heavy enough as it is, but I have to bring the bulky and relatively big plug to go with it which takes up space in my bag and weighs a fair bit as well.
Min-Kyu Choi’s plug (http://www.iconeye.com/index.php?option=com_content&view=article&id=3864:rca-student-radically-improves-the-uk-plug) looks like it might help – lightweight and foldable to save space in my bag.
Love it. Now just to get hold of one somehow…