Answer:
I am a nut with a hole
Fashions change, but what can a person wear that is never out of style?
I save lives on the ground and in the air. What am I?
My keepers feed me colored balls. With sticks they store on my den walls. Sometimes I store them in my pouch. Sometimes deep in my belly; ouch!
I belong to everyone. Sometimes make you happy sometimes make you sad. I will never end until the day you do.
I have a few points but we're not competing. I'll help you win when you're eating. What am I?