Answer:
I am easy to waste and unstoppable. What am I?
I come in different colors and shapes. Some parts of me are curvy some are straight. You can put me anywhere you like but there is only one right place for me.
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 work when I play and play when I work. What am I?
I always go to bed with my shoes on. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.