Answer:
I hop around and deliver eggs at Easter.
The person who makes it sells it. The person who buys it never uses it. The person who uses it never sees it. What is it?
I am a sharp looking horse with a flaxen tail. The longer I run the shorter my tail becomes.
A caribbean shape that makes ships disappear.
I may seem real but it always turns out I was never there in the first place... you only see me during a certain resting stage.
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.