These are all great ideas...It is so funny I teach kindergarten and within our "Classroom Helper" routine, we have built in a 10 finger wooooooo....I ask students when they are done with their class job what kind of a ten finger woo they would like and often times they make up their own...They love the Wooo's so much that they stand in the front of the room and wait patiently (if I forget) and then say to me, "I want a monkey one or dinosaur....
Some additional ideas for 10 finger woo's:
Monkey - hands in the pits and say OO - OO - OO
Dinosaur - hands out in front of body like a T-rex and say Stomp, stomp, stomp while stomping to their feet.
Cheerleader - hold fake pom-poms in hands and say, "Rah" (while extending right arm out from body), "Rah" (while extending left arm out from body) Sis-boom (rotate arms in a quick circle motion in from of the body) Bah! (both arms extended up and out in a Y above the head).
The more creative and personal it is the more fun we have!