10. See how much fuel you can replace with Silly String without getting caught.

 9. Kick the kennel carriers.

 8. Sedate the captain and put his uniform on an  ape,  then put the chimp on the plane.

 7. Replace the landing gear with big wheel  tricycles.

 6. Learn to juggle burning torches.

 5. Screw with the speakers so that whenever the captain says anything, they just play Alice Cooper's  School's Out.

 4. Bowl eggs down the aisles.

 3. If it's near Halloween, hide a spring loaded knife wielding doll behind the tray table in one of the
 seats, preferably one you know will be occupied by someone named Martha.

 2. One word: pantomime.