35 random acts of kindness - this is amazing and would be a good idea to do with your kids. On a birthday do a random act of kindness for each year they have lived. Meaning if they are 8 do 8 random acts of kindness.
Say "Good Morning" Saying hello to someone, even if you don't know them, is a common courtesy. It means you are acknowledging their presence; you are saying that they are a person, too, and that they are important enough for you to say hello to.