For Puma to sleep on - he deserves something nicer than the old suitcase he has now. TSA broke it and he started sleeping on it before I could throw it out. It's been 3 years of me just throwing an old piece of fabric over it. :)
What a cute idea! Take an old suitcase (scrounge out fantastic vintage leather ones art flea markets/garage sales and EBay) and turn it into a pet bed!! Depending on size, cover a regular bed-pillow, or find a dog pillow that will fit. If none of those work, make a simple pillow to fit, stuff with filler from craft store.