Due to limited space for where I could put it, Penny's playpen is smaller than the boys but I think it will work.
It's 29"L x 29"W x 14"H and made of coroplast. She was chewing the carpet, so free roam of the bigger space wasn't an option. Needs more toys. lol I wonder if I could attach some tube cage to the coroplast via a tube that she could play in. Not sure what that would be though. Or maybe make a coroplast dig box and attach it to the main pen with a tube. Ideas are welcome! Needs to be easy to clean though. lol