Business cards. Many have them and if you live in the diaspora they are relatively easy and cheap to produce. We are advised to have them and swap them with business contacts as much as possible. I have to admit that I haven’t always been very good at this; mostly because I always forget to bring my business card. I think the reason for forgetting them however is less my memory and more that I have considered them boring, flat and one-dimensional. Name, title, email, maybe business address, some sort of logo.