Personally, I quite like the Alice in Wonderland monologue, I used this monologue earlier this year (in a show where I got a lead might I add lol) It’s probably one of my favorite monologues. It’s appropriate and lots of fun and shows a lot of emotion. It can be found here: http://www.monologuearchive.com/c/carroll_001.html
Break your leg at auditions and keep rocking the stage!!