• Participating in random acts of kindness. For more information, visit: www.actsofkindness.org
  
• Acknowledging a passerby in your neighborhood or
  at work.
• Attending community events.
• Volunteering.
  
• Meeting your neighbors.
  
• Buying from local merchants.
  
• Making an extra effort to talk with someone who may have a different background or perspective than your own.
  
• Supporting schools, which tend to be cornerstones in a thriving community.
  
• Organizing or attending a neighborhood or community party.
  
• Spending less time on the internet or watching television and more time outside.
  
• Joining a club or other social organization.
  
• Personally greeting newcomers to your community. A strong community benefits the individual, the community as well as the greater society. People of all ages who feel a sense of belonging tend to lead happier and healthier lives, and strong communities create a more stable and supportive society. If you are feeling isolated or lonely, consider contacting your Employee Assistance Program for assistance. 

Source: http://www.washington.edu/admin/hr/benefits/publications/carelink/tipsheets/community.pdf