You’re queuing at a supermarket checkout in Konstanz and happen to carry, for whatever reason, a green sheet of paper: Well, that’s good for you, but better not to wave it around – take it from us! Anyone in a queue waving about a green sheet is Swiss, and the sheet of paper is a duty free form for claiming shopping taxes back. Which some people take their good old time completing after checkout. As you can imagine, this doesn’t go down so well with the other customers. More information, leaflets and instruction sheets on the duty free form is available from IHK Hochrhein-Bodensee (Chamber of Industry and Commerce).