Answer:
I am rubber you can eat!
I have keys but no locks. I have space but no room. You can enter but canβt go outside. What am I?
I am a ship that can be made to ride the greatest waves. I am not built by objects but built by minds.
Tear me off and scratch my head what once red is now black.
Break me and I am better immediately set and harder to be broken again.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.