This is a ball that I made from a bunch of different bricks. It is slightly larger then a softball and it is hollow! (It also rattles due to a Lego piece that fell in and wouldn't come out.)
This is a Mesopotamian Pyramid that I built for Art Class at school. It is seven 2 by 2 bricks wide on the bottom and then 6 bricks and so on. They think that seven steps is a lucky number. Plus, it's hollow!