This is the setup I came up with, after two hours:

IMG_20110629_063125

And this is me with it:

IMG_20110628_111839

Yes, it looks easy. And it should have been easy, if I didn’t have to dig around and figure out how to get around the large supporting platform, which was blocking the top parts from contacting. In the end, I managed to get some parts together to make stairs away from the platform. These are the parts I had to start out with, and make sense of:

IMG_20110629_063044