Repurposing a to small hamster cage

[Gnewby1823]

When I rescued/adopted my hamster Zuko. He came in a cage which was much to small, so I got him a bigger one and promptly moved him to that one. Now I have this to small cage and nothing to do with it. I would like to reuse it some how, What are your all's thoughts?
The cage he came in:

http://www.superpetusa.com/assets/005/24902.jpg

The cage he is in now:

Grreat Choice® Small Animal Pet Home | Cages | PetSmart (http://www.petsmart.com/small-pet/cages-habitats-hutches/grreat-choice-small-animal-pet-home-zid36-14480/cat-36-catid-600011?var_id=36-14480&_t=pfm%3Dcategory%26pfmvalue%3Dfaceted)

[BrainGirl]

I tried to use my ex-cages to grow catnip. The bars should have prevented my cat from eating it down to the roots. Unfortunately I bought a bad batch of soil so I'm going to have to redo my experiment:-?

The link doesn't work for me unfortunately, did you post it from a mobile device?

[corrieberry]

I would use it to make a door in a bin cage if you ever make one.

[Wexland]

Use it as a travel case in case you ever have to take your hammy anywhere?

[NiceCrocs]

Looks like a perfect travel cage to me :D

The current cage is too small too, though. It'll be fine for awhile but you'll really want to consider upgrading again soon. Remember the magic number is 360 square inches minimum! :)

[Gnewby1823]

Unfortunatly I won't be able to upgrade because the current cage literally takes up all the room on my bookshelf I keep it on, but I tend to play with him a lot outside of the cage. Also I am going away this weekend and I am bringing him this smaller cage will be used for travel :).