If you have kids, make up a bed time story for them every night.
I have been trying to do this for 5 years.
I certainly haven't succeeded in doing it every night (my guess would be that I do it about 60% of the time), and many of the stories won't win any literary awards.
But its a great challenge.
It forces you to think creatively, it let's you tell stories you want your kids to hear, it shows them that you place a premium on creativity, and it's a opportunity to spend a little additional time with them.
Also, you'll surprise yourself with what you can come up with.