Making it easy for members of your family to recognize each other and to feel they are a member of your group is especially important when your family reunion is large or when you're holding it where there are other people--non-family--around. But it is useful no matter what kind of reunion you hold because it makes people feel part of the family.
The fastest way to create a sense of belonging is to give your family a "uniform" that consists of a logo, name tags, special clothing such as t-shirts or caps and perhaps briefcases, mugs and other gear. Your "uniform" not only provides a sense of identify among family members, it also: