My son started showing at age 9. (He's now 11)
His first Angus heifer was named Cindy Louisiana or Cindy Lou.
Cindy Lou had a baby last month named Samantha (his brand new girlfriend)
Steers named after friends in school.
Year two Angus heifer was named Savannah, his girlfriend at the time.
She has a new baby boy, un-named at this point.
His Angus bull last year was named Arnold(after me,Dad) because he was born on my birthday.
This year's heifer is a crossbred named Maxine. Maxine was his grandmother and my Mom.
She was named Maxine in the hope she would live a long time and have lots of babies, just like her namesake..
My Mother lived to age 80 and had 9 kids.
My advice is to name them something meaningful to the child. Can't have too many great memories!