I've been folding a twin sheet (flat) in half to line the pen for Luna, so if she misses the pee pad or spills any food, it's not on the carpet. Plus my carpet is pretty old and I hated to think of her being in contact with it all the time
So today I was behind on laundry, and ran out of the flat sheets to use. I change her pen every day, I know I'm an obsessive paranoid Mom!

I got a bright idea and used a fitted sheet

! It keeps her from kicking her kibbles all over the place too, under my bed, etc.. Why didn't I think of this two weeks ago?

I've been crawling under my bed to pick up the kicked kibbles
Anyhoo, the pen is an eight panel small-sized gold-colored zinc wire. The sheet fits perfectly, and it'll stay where I put it too!