<a href="http://www.instructables.com/id/EFWF47HEFPEV2Z6BX8/">Instructables</a> had this how-to for a cheap and easy flash diffuser from a spent pack of cigarettes. I swear I thought of this two days before I read about it, and I took that as a sign to do it myself. Put it together right before I left Japan. In action <a href="http://www.flickr.com/photos/dakotasmith/375251411/">here</a> and <a href="http://www.flickr.com/photos/dakotasmith/352386014/">here</a>.