Hi folks!, In addition to the various business card samples at https://www.debian.org/events/materials/business-cards/, I slightly modified the "traditional-new" version to have a two-sided version, with an optional QR-code. http://debian.httrack.com/card-traditional-new-2/ (Not sure if this is really worth posting an email to this list, but who knows, it might be useful to a fellow DD.)