Aren't nieces great? You can love them and spoil them, and then return them back to their parents.
I have a niece/godchild who we've spoiled all her life. She's now 15, a sophomore in high school, a straight A student, a soccer star, a photographer, and a musician, who just got her first boyfriend. This may be the first summer where we won't be able to take her on vacation with us.