What good habits are you trying to instill in your children to serve them as they go through life? Thinking beyond the usual good manners.
Mine are being trained to always have a clean hankie in their pocket. Might seem trivial but it is one of the things I love about my DH that he always has a hankie. They come in very handy for more than just blowing noses and is perhaps the only 'old world' style thing one can do nowadays - no chance of getting him to wear a waistcoat or a hat a la Downton Abbey style!