Cage Uses for petstore cages?

You could use it for car rides or put the cage in your C&C cage to make it an eating area.

I have several pet store cages that I keep for quarantine or if any pig needs to be separated for medical reasons or post-op or anything like that. If you ever move you'll probably need something like that for transport. There are a lot of good reasons to have them around to use temporarily.

I cut a entrance way at the bottom of mine and took off the wire door, and I use it as a kitchen area for my pigs.

They can be useful for quarantine, transport or hay/ litter boxes.