Cage What to do with bored pigs while I wait for the big cage to come?

I ordered the Midwest off of amazon, but I' not going to bore you with why I came to that choice. Right now, my pigs are in the National Geograpic Guinea Pig Dome Cage. ("Offers a large space with two living levels so your guinea pig has lots of room to run and play." yeah right.) One of them has been living in there for about three months and one maybe three weeks. They seem to be at their wits end with the small space. They aren't fighting.

They chew the bars, they eat, sleep, repeat. I take them out for floortime and they live for it. They are extremely bored and seem to just hate living in there more than ever. Are they going to be okay for the next 5-6 days it takes for the big cage to come here? What can I do other than keep moving the cage around to different areas and fit the smallest toys in their cage? The oldest pig has gotten so fed up with this if I try to put him back in his cage he bites me. I don't blame him. It's a dreary, mind-numbing existence.

It's killing me to wait this long for the cage to come. I want to know what I can do to make them less bored, and I'll be greatful for any help. lol