One thing kids like is to be tricked. For instance, I was going to take my nephew to see a Spurs game, but instead I drove him to an old burned-out warehouse. 'Oh no,' I said, 'The Spurs have burned down.'
He cried and cried, but I think that deep down he thought it was a pretty good joke.
I started to drive over to the real Spurs game, but it was getting pretty late.