21. Sneak into Herr Zeller's car and when he's driving, scream "BOO!" in his ear
22. Tell Franz the butler he needs a haircut
23. Tell Friedrich or Kurt they have to chaperone the Captain and Baroness Schraeder on a date.
24. Turn the von Trapps' living room into a swimming pool.
25. Transport the gazebo into the von Trapp living room while the Captain in away on a trip.
26. Bonk Herr Zeller (or any Nazi) on the head with the guitar.
27. Tell the Baroness she "will make a very fine nun,"
28. (this would only work if you are the Captain) Sing "how do you solve a problem like Maria" after she took the children out on the boat.
29. Put water in the Captain's whistle so it squirts out when he blows it.
30. Make a Nun Fashion Show.
I originally planned to make a list of 50 things, but I ran outta ideas, sorry. :( To make up for that, I'm planning to write some stories based on some things on this list, which I'll start now.