It has happened, I'm out of shelf space.

Right now I have 3 identical wobbly shelfs full of games and full of figures on the top.
My shelfs are fairly short and the only way to go is up. I was thinking of building some myself, and though I do have the skills, I do not have the resources or the time as I am going to collage in a month. So I began digging around, I want something like this:
http://www.amazon.com/Atlantic-38435715-Oskar-1080-Media/dp/tech-data/B0058O8GWWI hear this used to be good, but they changed it and made it crap.
I was thinking of just getting one or two, mostly to compress my collection and have all my figures in one place.
I have overall:
90 loose NES carts
150 loose Famicom carts
100 UGCs
220 DVDS
130 DS Cases
30 CD Cases
50+ figures
And space for shelves slightly over 30" wide. I can't drill supporters into the walls, they are made of plaster.
Anyone know any good, sturdy solutions?