I have 4 baby kittens. They are all around 4 weeks old. We have them in one of our bathtubs, but we are wanting to get a playpen set up for them so that they will have more room to run around. I don't have the money to buy a playpen at a store, especially since I only need the playpen for another couple of weeks and then they'll be big enough to roam the house. Any suggestions on how to make a homemade one? I don't have access to any wood, metal, etc. And really, I'm looking to build something that is round. You know, like those big round gates you can get. Thanks!