Answer:
I wear a red robe, with staff in hand, and a stone in my throat.
It is weightless, you can see it. If you put it in a barrel it will make it lighter?
When it comes in, From sea to shore, Twenty paces you'll see, No less, no more.
I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
Pirates put their booty in it.
I am your mother's brother's only brother in law. Who am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?