hash hut

I want to expand my hamsters cage and make it more interesting for him?
Right now, she has a pretty boring cage. A hut, a waterbottle, a wheel, and toilet paper roles.
And I want to make it bigger so I can add more things in it for her.
What do you think of this?
http://cgi.ebay.com/Hamster-Rat-Degu-Gerbil-cage-cages-20G-Tank-Topper_W0QQitemZ350082747294QQcmdZViewItem?hash=item350082747294&_trksid=p3286.m14.l1318#ebayphotohosting
I really appreciate your idea of giving the best to your hamster. The cage is a huge one with lots of spaces for your little hamster.
But the cage does not look tunnel friendly in the sense that you cannot connect tunnels in a maze style for your hamster. And also your current cage will go to waste unless you plan on giving it away to someone.
Another idea would be if you have the option of connectivity to your current cage, why not make a bin cage and attach to the current one. You can go on adding a variety of bins to the current cage to make it more interesting for your hamster. It is easy to make and inexpensive and you would not feel the pinch if anytime you get bored with one set up and want to make a different style or arrangement. On a tutorial for making bin cages at home, click on the following link –
http://www.petwebsite.com/article_read.asp?parent_id=14&parent_name=Hamsters&id=256&title=Make%20A%20Homemade%20Hamster%20Bin%20Type%20Cage
Smoke some sift macro