Volkswagen company has this, IMHO, 5-star initiative called Thefuntheory.com
I really like it because it displays creativity in improving human behavior. To understand what I mean better see videos of their fun projects which are able to change lots of people for the better.
If you have some bright ideas of your own then do it and share them. They have a Fun theory award from Oct 1st to Dec 15th. If you have the best entry then you win 2500 euros! For more information of contest mechanics, visit their website.