Good afternoon! I have 9 beautiful little babies that hatched out last Thurs and Fri. They are doing just fine in an extra-large guinea pig cage that is 44 x 21. I live in Michigan so I plan to keep them inside for probably 5 or six weeks, so they will soon outgrow this set-up. I'm looking to do something at least twice the size for as little cost as possible. I'm wondering if anyone has tried anything like a kiddie pool with an x-pen around it or any other ideas? Pictures would be appreciated if you have them, and thank you in advance for any advice!