Answer:
I run up and down the stairs without moving. What am I?
Draw fire or fill me; I'm still empty.
What is it that makes tears without sorrow. And takes its journey to heaven?
Brown I am and much admired. Many horses have I tried. Tire a horse and worry a man, tell me this riddle if you can. What am I?
Use me to reward good behavior.
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?