Both towards business relations, as well as colleagues take the time to write them a handwritten note, on e.g. a Christmas card.
Joost d’Hooghe – At the end of the year I send about 90 cards to our most important business partners. On each card I aim to add a personal story, or a reference to a joined success we had. Make sure to focus on the person as well as the business. Mails are spam, a handwritten card with a personal message is a great gift.