Every day we interact with objects, places and sensations that affect the way we think and feel. This can be used to the writer's advantage by planting symbols in the reader's path to reinforce a specific message, feeling or idea.
Look at the setting and the character's state of mind, and then think about what you want the reader to see. Is there a descriptive symbol or two that works naturally within the scene to help foreshadow an event or theme, or create insight into the character's emotional plight?
Ducks swimming with hatchings
Bear with cubs
Fox kits playing together
A group of geese foraging together
Birds building a nest
Prairie Dog groups
Moth or fly swarms
School of fish
The Family tree/Genealogy
The dinner table
Crests, Coat of Arms
A common last name
Yearly family photos/Christmas card
Iconic holiday gatherings (Thanksgiving, Christmas)
Family game night
'Family' fun centers (entertainment)
Family Rate (swimming pools, theme parks, etc)
A sense of community
Fighting over the past
Child custody agreements
Visiting rights/shared custody
These are just a few examples of things one might associate with Family. Some are more powerful than others. A minivan packed for vacation is a strong symbol, and likely will not require reinforcement. However, a Birthday celebration may not foreshadow Family on its own. Let the story's tone decide if one strong symbol or several smaller ones work the best.