I dreamed I invented a game. One guy would sit at the top of a chute, and I was at the bottom. I would use some plastic batons to knock a ball up the chute, trying to make sure the guy couldn't catch them. I also had to stop the ball getting past me at the bottom.
It was a huge hit, I was delighted. Only now in the morning do I realise I "invented" a big pinball machine using dildos and a slide.