Like many Japanese, we usually buy blank postcards specially made for ink-jet printing and create our own customised cards: since this year is the year of the dog, our own dog, Jaz (Instagram@jasmin.the.dog), was featured on the 2018 card (pictured). This is fairly common, and most people add pictures of family and pets as a way of updating friends on what happened during the previous year. Our cards contained the standard new year greeting in red at the top: akemashite omedetō gozaimasu (明けましておめでとうございます) followed by the ubiquitous but untranslatable Japanese phrase asking for indulgence in the coming year (kotoshi mo yoroshiku onegaishimasu =今年もよろしくお願いします). For a great explanation on how and what to write on a nengajō see here.
The excitement of nengajō is not yet over though: each card has a special unique number at the bottom (pictured) and January 14th (today!) is chūsenbi (抽選日) or raffle drawing day. The lucky winners will get a New Year's gift or otoshidama (お年玉) a word which typically refers to money given in small envelopes to children by relatives and visitors. You can see the winning prizes and numbers here: did I get anything?