The importance of teaching kids about helping others starts by example. There are many volunteer opportunities in your neighborhood, at any time of the year. You don't have to wait until Thanksgiving or Christmas to help sort supplies at a food pantry, clean up a park or help repair a house for a family in need. Talk to your son about what might interest him, and sign up for an opportunity you can share together. You can spend as little as one morning a month volunteering, or you may discover you want to offer more time if you find a local organization to actively support.
Remember, creating a special bond is about putting time and effort into father-son activities, and the simplest times are often the most memorable.