How to coach good sportsmanship?

How would you handle coaching good sportsmanship?  It’s hard to coach it if you don’t have parent support. Most kids look up to their coach and will do what the coach says during practice and a game, but once they leave that field, it’s hard to monitor that sportsmanship.  One way to continue this is to have all your players make goals.  At the beginning of the year, have each player write down 3 goals and have them bring it to practice.  Make copies of all those goals and then tell the kids to put their goals where they can read them everyday.  Encouraging athletes to reach their goals keeps their mind in a positive direction.  

What other ideas do you have for coaching good sportsmanship?