I tried to find a picture of Sam when he was about 3 just now. He had constructed an entire "car" from my blue laundry basket, complete with four posts holding up a roof and a steering wheel. And he fit in with plenty of room for his long car ride. Alas, I could not find it for proper comparison with the picture below. You'll just have to imagine a chubby little blond boy with bright blue eyes, ecstatic over his creation.
In a fit of trying to avoid his math homework this morning, Sam settled himself into the same laundry basket. The effect is not quite the same.