Just pick the first word that you think of when you associate yourself with that category. Don't overthink it.
If I was a/an _____, I'd be ______.
TV show: My Boys
Song: No Rain by Blind Melon
Movie: Bend it Like Beckham
Book: Neverwhere by Neil Gaiman
Fictional Character: Lara Croft
Article of Clothing: T-shirt
Plant: Flame Tree
Mythological Animal: Sphinx
Inanimate Object: iPod
School Activity: Yearbook
Positive Attribute: Stubbornness
Negative Attribute: Stubbornness