Answer:
What can you put in a barrel to make it lighter?
If you're stealing honey, be prepared to receive vengeance in this form.
The more holes you cover the lower it goes.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
What did the piece of wood say when he saw the screwdriver and screws approaching?