Piece of moon cheese.

A boomerang cricket ball so that when there's only you and a mate playing you know that the ball will always come back to you.

Space trampoline to launch you to the stars.

A device that looks like it's a homework book but actually it's a PlayStation 2.

A motorised couch which has a plastic dome to cover you up when it rains so that you always stay dry and comfortable when you go to school or work.