Answer:
What type of house weighs the least?
Weight in my belly, trees on my back, nails in my ribs, feet I do lack. What am I?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?
You went into the woods and got me. You sat down to seek me. You brought me home because you couldn't find me.
What runs around the whole yard without moving?
Give it food and it will live, give it water and it will die.