1. Cut your styrofoam ball in half. You can use a saw or a steak knife to make a clean cut. Have an adult help.

2. Glue each half of the ball to opposite sides of the CD-Rom.

3. Paint the ball in strange, alien colors.

4. Poke three stick pins in the bottom for landing gear.

5. Poke two more stick pins in the top of the UFO for antennae.

Now, you're ready for an alien invasion!