Do you have a sleepy kid in your house that just can't wake up in the morning?
Try this simple trick. All you need is a piece of paper!
Take a piece of computer paper and fold it in half lengthwise. Then fold it in half again. Lift the two inner pieces up half way and hold the four layers together in the middle. With a quick swinging motion, snap the paper downward and hear the loud 'CRACK!'
Your kids will be jumping out of bed just to try to figure out how you made the noise. If that doesn't do the trick, you might need an air horn.