After going to the Soul Run club at ICU, Rob, Katy and I cycled to our local city office in Musashi Koganei to pick up our Alien cards (外国人登録証, gaikokujin tourokushou), which we applied for a couple of weeks ago.
We just handed over the certificates they gave us when we applied (they said also passports are okay) and they had our cards ready.
So now we don't need to carry our passports around with us, and they act as an official proof of ID.
Another big thing ticked off the list! Just waiting to hear from the National Health Insurance office so we can buy it!