Business Card made out of old postcards with a laser cutter

For our cooperative [sinndrin genossenschaft](http://www.sinndrin.ch/) we wanted to have some special business cards with some recycled material. So we decided to buy a bunch of old postcards in a second hand store for almost nothing and laser cut two business cards out of one postcard. The business card format is quite bad to layout on A6 Postcards, therefor much material is being wasted. We thought of change the standard format (85 mm x 55 mm) to something smaller or maybe trapezoidal to fit a