Answer:
I am the home for feathery animals.
you cannot keep me until you have given me
What has 4 fingers and a thumb but isn't alive?
You use me between your head and your toes the more I work the thinner I grow.
Roast, boast, coast, post. What do you put in a toaster?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.