Answer:
I hop around and deliver eggs at Easter.
I am easy to waste and unstoppable
What is the word that even in plain sight remains hidden?
I am alive without breath and cold as death. I am never thirsty but always drinking. What am I?
I have keys but no locks. I have space but no room. You can enter but can't go outside. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.