Answer:
As a stone inside a tree, I’ll help your words outlive thee. But if you push me as I stand, the more I move the less I am.
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 am free the first time and second time but the third time is going to cost you money.
I go up and down at the same time. Up towards to sky and down towards the ground. What am I?
I roam through the lands hoping to rescue my love. I search high and low and will stomp on you if you get in my way!
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.