Nickname at new school?

i'll be starting at a new school next year, and i wanted to start being called by a different name. my name is natalie elise. everyone in my old school just called me natalie..or more like "naddullie" (at least the way they talked there..) i've kindof gotten bored with being called that. people outside of school call me nat, and i like it, but i'm thinking of any other possibilities for nicknames. should i go by my middle name "elise" or stay with just "natalie"? what are some nicknames for natalie? thank you :) (my username is elise because i generally go by my middle name on the internet..like for my email and everything)