This winter, there's a multitude of reasons to send holiday cards. Perhaps you wish to express gratitude for a good deed or positive presence in your life, or renew connections with old colleagues and friends. If you're more tactical, this could be an opportunity to network, building relationships with clients or forming business connections with peers. Most importantly, you can use festive handwritten cards to keep in touch with, and show appreciation for, family members. In every case, these cards are incredibly useful for showing folk that you're thinking of them.