Callie is already a nickname stemming from names such as Calanthe and Caroline.
but for those who's first name is actually Callie, you could just make something up. My friend callie hated it when i called her Cal but now everyone does it. I also call her Calibu. so just use your imagination.
Here is a better one:
Calwow
Coolaid
Callie the cow (my aunt)
Cal
Calea
Callie Angell went by Callie.
Callie Frey's birth name is Callie Frey Dunlap.
for really imaginative people kambo is cute for like kailey, kallie, callie, or even katie
Callie Angell's birth name is Caroline Sergeant Angell.
Callie Torres was created in 2006.
Callie Chaffin is 5' 2".
Callie Thorne is Italian-American.
Callie Cobra is 5' 6".
The name callie is latin for "most beautiful"
I don't know who Callie Rivers is. But I think you do.
Callie is described as "carefree".
if its a girl callie jane