I would use an ex-pen. They sell them at pet smart. I set mine up the elongated way with her bed at one end food in the middle and her pee pad near the door of the pen.
Kennel-Aire Exercise Pens - Exercise Pens - Crates & Kennels - PetSmart
You can always look at my album on my profile for a picture of it I think it is in the first album of Pixie. I would post a picture here but I don't have a file resizer, and my pictures are too big.